Exhibit 99.1

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Kingsoft Cloud Holdings Limited

金山云控股有限公司

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 3896)

(Nasdaq Stock Ticker: KC)

CONTINUING CONNECTED TRANSACTIONS

IN RELATION TO THE 2025 XIAOMI COOPERATION FRAMEWORK AGREEMENT

The Board announces that, on July 29, 2025 (after trading hours), the Company and Xiaomi entered into the 2025 Xiaomi Cooperation Framework Agreement, pursuant to which (1) the Company has agreed to purchase and Xiaomi has agreed to provide IDC related services for an initial term of three years commencing from July 29, 2025, and (2) the Company has agreed to purchase and Xiaomi has agreed to sell network hardware devices for an initial term of one year commencing from July 29, 2025.

The summary of the principal terms of the 2025 Xiaomi Cooperation Framework Agreement is as follows:

There was no historical transaction amount in relation to the procurement of IDC service and the procurement of network hardware devices by the Group from Xiaomi Group.

The proposed annual caps in respect of the procurement of network hardware devices are determined with reference to, among other, (i) the type and technical specifications of hardware devices to be procured from Xiaomi Group, (ii) the estimated procurement quantity of devices arising from the growing business needs of cloud services and artificial intelligence infrastructure of the Group, (iii) the planned business timelines associated with the deployment and operation of the network hardware devices of the Group, (iv) the prevailing market price of similar devices; and (v) the pricing principle agreed by the parties under the 2025 Xiaomi Cooperation Framework Agreement.

The Directors (excluding the Directors who shall abstain from voting on the relevant resolutions and including the independent non-executive Directors) consider that the above proposed annual caps under the 2025 Xiaomi Cooperation Framework Agreement are fair and reasonable.

As a cloud service provider, the Company requires substantial IDC resources and network hardware devices to support its growing operations and improve its cloud service capacity. Given the long-standing business relationship between the Group and Xiaomi Group as well as the business and operation familiarity of each party, utilizing Xiaomi’s available IDC services and procuring network hardware devices from Xiaomi Group will allow the Group to leverage on the infrastructure and facility coverage owned by Xiaomi Group, integrate Xiaomi’s advanced services and products with the Group’s offerings, facilitate the Group’s product innovation and business growth as well as deepen its cooperation with Xiaomi Group. In addition, as the terms and conditions of the services and products to be procured from Xiaomi Group are no less favorable to the Group than those available from other Independent Third Party service providers, entering into such transactions would enable the Group to secure a stable and high-quality source of IDC services and network hardware devices and reduce the administrative costs of the Group in procuring similar services from a wide range of providers, which would further improve the overall operating efficiency.

Taking into account (i) the increasing demand of IDC services and network hardware devices of the Group, (ii) the parties’ long-term collaboration, and (iii) the no less favorable conditions offered by Xiaomi than those available from Independent Third Party suppliers, the Company believes that it is in the interests of the Company and the Shareholders as a whole to procure such products and services from Xiaomi to ensure stability and scalability in response to the Company’s growing business needs and facilitate the improvement of the Group’s technology capabilities, and the Directors (excluding the Directors who shall abstain from voting on the relevant resolutions and including the independent non-executive Directors) consider that it is beneficial to enter into the 2025 Xiaomi Cooperation Framework Agreement to regulate the continuing connected transactions contemplated thereunder.

In order to ensure the terms and conditions of the continuing connected transactions contemplated under the 2025 Xiaomi Cooperation Framework Agreement are on normal commercial terms and fair and reasonable to the Company and Shareholders and are no less favourable from Independent Third Parties, the Company has adopted the following internal control procedures:

The Company was incorporated under the laws of the Cayman Islands on January 3, 2012 as an exempted company with limited liability, the ADSs of which are listed on Nasdaq under the symbol of “KC” on May 8, 2020 and the shares of which are listed on the main board of the Hong Kong Stock Exchange under the stock code “3896” and stock short name “KINGSOFT CLOUD” on December 30, 2022.

The Company is a leading cloud service provider in China. With its full commitment to cloud service, it is dedicated to mobilizing resources to enable its customers to successfully embrace the benefits of cloud solutions, to pursue their digital transformation strategies, and to create business value.

Xiaomi, the substantial shareholder of the Company, is a company incorporated with limited liability in the Cayman Islands on January 5, 2010, whose class B shares are listed on the Hong Kong Stock Exchange (Stock Codes: 1810 (HKD counter) and 81810 (RMB counter)).

Xiaomi is principally engaged in development and sales of smartphones, IoT and lifestyle products, provision of internet services, development, manufacture and sales of smart EV and investments holding in the PRC and other countries or regions.

Mr. Lei Jun is considered to have material interests by virtue of his directorship and shareholding in Xiaomi, and Mr. Zhang Duo is considered to have material interests by virtue of his current positions in Xiaomi. Accordingly, Mr. Lei Jun and Mr. Zhang Duo have abstained from voting on the relevant Board resolutions to approve the 2025 Xiaomi Cooperation Framework Agreement (including the proposed annual caps) and the transactions contemplated thereunder. Save as mentioned above, none of other Directors has a material interest in such transactions and is required to abstain from voting on the relevant resolutions at the Board meeting.

The Directors (excluding the Directors who shall abstain from voting on the relevant resolutions and including the independent non-executive Directors) are of the view that the transactions under the 2025 Xiaomi Cooperation Framework Agreement were entered into after arm’s length negotiation between the parties thereto and in the ordinary and usual course of business of the Group and on normal commercial terms, and the terms and conditions thereof (including the proposed annual caps) for such transactions are fair and reasonable and in the interests of the Company and the Shareholders as a whole.

As at the date of this announcement, Xiaomi directly and indirectly held an aggregate of approximately 11.12% of the Shares, thus is a connected person of the Company as defined under the Hong Kong Listing Rules. Accordingly, entering into the 2025 Xiaomi Cooperation Framework Agreement and the transactions contemplated thereunder constitute continuing connected transactions of the Company under Chapter 14A of the Hong Kong Listing Rules.

As the highest applicable percentage ratios in respect of the annual caps of (1) the procurement of IDC related services, and (2) the procurement of network hardware devices, on both individual and aggregate basis, are higher than 0.1% but less than 5%, the transactions contemplated under the 2025 Xiaomi Cooperation Framework Agreement are subject to the reporting, announcement and annual review requirements, but are exempt from the independent shareholders’ approval requirement under Chapter 14A of the Hong Kong Listing Rules.

In this announcement, unless the context otherwise requires, the following words and expressions shall have the meanings ascribed to them below:

Hong Kong, July 29, 2025

As at the date of this announcement, the board of directors of the Company comprises Mr. Lei Jun as Chairman and non-executive director, Mr. Zou Tao as Vice Chairman and executive director, Mr. Zhang Duo as non-executive director, and Mr. Yu Mingto, Mr. Wang Hang and Ms. Qu Jingyuan as independent non-executive directors.