v3.26.1
Cover
 12 Months Ended
Dec. 31, 2025
shares
Document Information [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Financial Statement Error Correction [Flag] false
Document Shell Company Report false
Entity Interactive Data Current Yes
Document Accounting Standard U.S. GAAP
ICFR Auditor Attestation Flag false
Amendment Flag false
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Entity Information [Line Items]  
Entity Registrant Name Hongli Group Inc.
Entity Central Index Key 0001855557
Entity File Number 001-41671
Entity Incorporation, State or Country Code E9
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Shell Company false
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Incorporation, Date of Incorporation Feb. 09, 2021
Entity Contact Personnel [Line Items]  
Entity Address, Address Line One No. 777
Entity Address, Address Line Two Daiyi Road
Entity Address, Address Line Three Changle County
Entity Address, City or Town Weifang City
Entity Address, Country CN
Entity Address, Postal Zip Code 262400
Entity Listings [Line Items]  
Title of 12(b) Security Ordinary shares, par value $0.0001
Trading Symbol HLP
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 73,438,750
Business Contact [Member]  
Entity Contact Personnel [Line Items]  
Contact Personnel Name Jie Liu
Contact Personnel Email Address zongjingban@hongli-profile.com
Entity Address, Address Line One No. 777
Entity Address, Address Line Two Daiyi Road
Entity Address, Address Line Three Changle County
Entity Address, City or Town Weifang City
Entity Address, Country CN
Entity Address, Postal Zip Code 262400
Entity Phone Fax Numbers [Line Items]  
City Area Code +86
Local Phone Number 0536-2180886