Exhibit 99.1

So-Young Reports Unaudited Second Quarter 2025 Financial Results

BEIJING, China, August 15, 2025 — So-Young International Inc. (Nasdaq: SY) (“So-Young” or the “Company”), the leading aesthetic treatment platform in China connecting consumers with online services and offline treatments, today announced its unaudited financial results for the second quarter ended June 30, 2025.

Second Quarter 2025 Financial Highlights

Second Quarter 2025 Operational Highlights

¹ This press release contains translations of certain Renminbi (RMB) amounts into U.S. dollars (US$) solely for the convenience of the reader. Unless otherwise specified, all translations of Renminbi amounts into U.S. dollar amounts in this press release are made at RMB7.1636 to US$1.00, which was the U.S. dollars middle rate announced by the Board of Governors of the Federal Reserve System of the United States on June 30, 2025.

² Non-GAAP net income/(loss) attributable to So-Young International Inc. is defined as net income/(loss) attributable to So-Young International Inc. excluding share-based compensation expenses attributable to So-Young International Inc. See “Reconciliation of GAAP and Non-GAAP Results” at the end of this press release.

Mr. Xing Jin, Co-Founder and Chief Executive Officer of So-Young, commented, “During the second quarter, our branded aesthetic centers became the largest contributor to revenue for the first time, a significant milestone in our transformation strategy. With 29 aesthetic centers now in operation across China, we have solidified our position as the country’s leading light medical aesthetics brand. This achievement highlights the strength of our vertically integrated strategy and continued focus on offering standardized aesthetic services. Through ongoing operational enhancements, expanding portfolio of proprietary products, and brand-enhancing initiatives that deepen consumer engagement, we have substantially increased customer trust and loyalty. As we enter the next phase of growth, we are focused on further scaling our aesthetic center network and broadening our market presence, unlocking greater long-term value for customers, partners, and shareholders.”

Mr. Hui Zhao, Chief Financial Officer of So-Young, added, “In the second quarter, we saw further improvements in both the scale and quality of our aesthetic centers. With a target of operating 50 centers by year-end, our near-term financial results will continue to reflect ongoing investments to support the long-term sustainable growth and consolidate our market leading position.”

Second Quarter 2025 Financial Results

Revenues

Total revenues were RMB378.7 million (US$52.9 million), a decrease of 7.0% from RMB407.4 million in the same period of 2024. The decrease was primarily due to a decrease in the number of medical service providers subscribing to information services on So-Young’s platform.

³ Since the second quarter of 2025, in light of the better monitoring business development of branded aesthetic centers, the previous line item information services and others was separated into three line items, which are aesthetic treatment services, information services and other services. And the Company grouped the revenue generated from information services and reservation services, which is renamed as information and reservation services.

The revenue generated from aesthetic treatment services was previously reported in line item of information services and others. The revenue generated from information and reservation services and other services for the second quarter of 2024 have also been retrospectively updated. The amount reclassified from previous line item information services and others to aesthetic treatment services and information and reservation services is RMB27.4 million and RMB187.4 million for the second quarter of 2024, respectively.

Cost of Revenues

Cost of revenues was RMB184.6 million (US$25.8 million), an increase of 19.0% from RMB155.1 million in the second quarter of 2024. The increase was primarily due to business expansion of the branded aesthetic centers. Cost of revenues included share-based compensation expenses of RMB0.1 million (US$0.0 million), compared with RMB0.2 million in the corresponding period of 2024.

Operating Expenses

Total operating expenses were RMB241.3 million (US$33.7 million), a decrease of 1.8% from RMB245.6 million in the second quarter of 2024.

⁴ Since the second quarter of 2025, the previous line item cost of services and others was separated into three line items, which are cost of aesthetic treatment services, cost of information and reservation services and cost of other services. Cost of aesthetic treatment services primarily consists of expenditures relating to aesthetic treatment services in branded aesthetic centers, cost of information and reservation services primarily consists of expenditures relating to operation of platform business, and the remaining cost of services and others is reclassified into cost of other services. The cost of aesthetic treatment services, cost of information and reservation services and cost of other services for the second quarter of 2024 have also been retrospectively reclassified.

Income Tax (Expenses)/Benefits

Income tax expenses were RMB1.9 million (US$0.3 million), compared with income tax benefits of RMB2.6 million in the same period of 2024.

Net (Loss)/Income Attributable to So-Young International Inc.

Net loss attributable to So-Young International Inc. was RMB36.0 million (US$5.0 million), compared with a net income attributable to So-Young International Inc. of RMB18.9 million in the second quarter of 2024.

Non-GAAP Net (Loss)/Income Attributable to So-Young International Inc.

Non-GAAP net loss attributable to So-Young International Inc., which excludes the impact of share-based compensation expenses, was RMB30.5 million (US$4.3 million), compared with RMB22.2 million non-GAAP net income attributable to So-Young International Inc. in the same period of 2024.

Basic and Diluted (Loss)/Earnings per ADS

Basic and diluted loss per ADS attributable to ordinary shareholders were RMB0.35 (US$0.05) and RMB0.35 (US$0.05), respectively, compared with basic and diluted earnings per ADS attributable to ordinary shareholders of RMB0.18 and RMB0.18, respectively, in the same period of 2024.

Cash and Cash Equivalents, Restricted Cash and Term Deposits, Term Deposits and Short-Term Investments

As of June 30, 2025, cash and cash equivalents, restricted cash and term deposits, term deposits and short-term investments were RMB998.6 million (US$139.4 million), compared with RMB1,253.2 million as of December 31, 2024.

Business Outlook

For the third quarter of 2025, So-Young expects aesthetic treatment services revenues to be between RMB150.0 million (US$20.9 million) and RMB170.0 million (US$23.7 million), representing a 230.5% to 274.6% increase from the same period in 2024. The above outlook is based on the current market conditions and reflects the Company’s preliminary estimates of market and operating conditions, as well as customer demand, which are all subject to change.

Non-GAAP Financial Measures

To supplement the financial measures prepared in accordance with generally accepted accounting principles in the United States, or GAAP, this press release presents non-GAAP income/(loss) from operations and non-GAAP net income/(loss) attributable to So-Young International Inc. by excluding share-based compensation expenses from income/(loss) from operations and net income/(loss) attributable to So-Young International Inc., respectively. The Company believes these non-GAAP financial measures are important to help investors understand the Company’s operating and financial performance, compare business trends among different reporting periods on a consistent basis and assess the Company’s core operating results, as they exclude certain expenses that are not expected to result in cash payments. The use of the above non-GAAP financial measures has certain limitations. Share-based compensation expenses have been and will continue to be incurred in the future. All these are not reflected in the presentation of the non-GAAP financial measures, but should be considered in the overall evaluation of the Company’s results. The Company compensates for these limitations by providing the relevant disclosure of its share-based compensation expenses in the reconciliations to the most directly comparable GAAP financial measures, which should be considered when evaluating the Company’s performance. These non-GAAP financial measures should be considered in addition to financial measures prepared in accordance with GAAP, but should not be considered a substitute for, or superior to, financial measures prepared in accordance with GAAP. Reconciliation of each of these non-GAAP financial measures to the most directly comparable GAAP financial measure is set forth at the end of this release.

Conference Call Information

So-Young’s management will hold an earnings conference call on Friday, August 15, 2025, at 7:30 AM U.S. Eastern Time (7:30 PM on the same day, Beijing/Hong Kong Time). Dial-in details for the earnings conference call are as follows:

A telephone replay will be available two hours after the conclusion of the conference call through 23:59 U.S. Eastern Time, August 22, 2025. The dial-in details are:

Additionally, a live and archived webcast of this conference call will be available at http://ir.soyoung.com.

About So-Young International Inc.

So-Young International Inc. (Nasdaq: SY) (“So-Young” or the “Company”) is the leading aesthetic treatment platform in China connecting consumers with online services and offline treatments. The Company provides access to aesthetic treatments through its online platform and branded aesthetic centers, offering curated treatment information, facilitating online reservations, delivering high-quality treatments, and developing, producing and distributing optoelectronic medical equipment and injectable products. With its strong brand recognition, digital reach, affordable treatments and efficient supply chain, So-Young is well-positioned to serve its audience over the long term and grow along the medical aesthetic value chain.

Safe Harbor Statement

This announcement contains forward-looking statements. These statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as “will,” “expects,” “anticipates,” “future,” “intends,” “plans,” “believes,” “estimates,” “confident” and similar statements. Among other things, the Financial Guidance and quotations from management in this announcement, as well as So-Young’s strategic and operational plans, contain forward-looking statements. So-Young may also make written or oral forward-looking statements in its periodic reports to the U.S. Securities and Exchange Commission, in its annual report to shareholders, in press releases and other written materials and in oral statements made by its officers, directors or employees to third parties. Statements that are not historical facts, including but not limited to statements about So-Young’s beliefs and expectations, are forward-looking statements. Forward looking statements involve inherent risks and uncertainties. A number of factors could cause actual results to differ materially from those contained in any forward-looking statement, including but not limited to the following: So-Young’s strategies; So-Young’s future business development, financial condition and results of operations; So-Young’s ability to retain and increase the number of users and medical service providers, and expand its service offerings; competition in the online medical aesthetic service industry; changes in So-Young’s revenues, costs or expenditures; Chinese governmental policies and regulations relating to the online medical aesthetic service industry, general economic and business conditions globally and in China; and assumptions underlying or related to any of the foregoing. Further information regarding these and other risks is included in the Company’s filings with the Securities and Exchange Commission. All information provided in this press release and in the attachments is as of the date of the press release, and So-Young undertakes no duty to update such information, except as required under applicable law.

For more information, please contact:

So-Young

Investor Relations

Ms. Mona Qiao

Phone: +86-10-8790-2012

E-mail: ir@soyoung.com

Christensen

In China

Ms. Charlie Chi

Phone: +86-10-5900-1548

E-mail: charlie.chi@christensencomms.com

In US

Ms. Linda Bergkamp

Phone: +1-480-614-3004

Email: linda.bergkamp@christensencomms.com

SO-YOUNG INTERNATIONAL INC.

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Continued)

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SO-YOUNG INTERNATIONAL INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

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SO-YOUNG INTERNATIONAL INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Continued)

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SO-YOUNG INTERNATIONAL INC.

Reconciliation of GAAP and Non-GAAP Results

(Amounts in thousands, except for share and per share data)