| Cover Page | 12 Months Ended |
| Dec. 31, 2023 shares |
| Document Information [Line Items] | |
| Document Type | 20-F/A |
| Amendment Flag | true |
| Amendment Description | This Amendment No. 1 (the “Amendment”) to the Annual Report on Form 20-F of Burning Rock Biotech Limited (the “Company”) for the fiscal year ended December 31, 2023, originally filed with the Securities and Exchange Commission (the “SEC”) on April 29, 2024 (the “Original Filing”), is being filed solely to include revised officers’ certifications contained in Exhibits 12.1 and 12.2 in response to certain comment of the staff of the SEC. This Amendment contains only the cover page, this explanatory note, the exhibit index, the signature page and the revised certifications. Because no financial statements are included with this Amendment, paragraph 3 of the Section 302 certifications has been omitted. Except for the foregoing, this Amendment does not alter or update any other information contained in the Original Filing. The Original Filing continues to speak as of the date of the Original Filing. Accordingly, this Amendment should be read in conjunction with the Original Filing, and the Company’s filings made with the SEC subsequent to the filing of the Original Filing. |
| Document Annual Report | true |
| Document Transition Report | false |
| Document Shell Company Report | false |
| Document Period End Date | Dec. 31, 2023 |
| Document Fiscal Year Focus | 2023 |
| Document Fiscal Period Focus | FY |
| Entity Registrant Name | Burning Rock Biotech Limited |
| Entity Central Index Key | 0001792267 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-39316 |
| Entity Well-known Seasoned Issuer | No |
| Entity Voluntary Filers | No |
| Entity Current Reporting Status | Yes |
| Entity Interactive Data Current | Yes |
| Entity Emerging Growth Company | false |
| Entity Shell Company | false |
| ICFR Auditor Attestation Flag | true |
| Entity Filer Category | Accelerated Filer |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | No.5 Xingdao Ring Road North |
| Entity Address, Address Line Two | International Bio Island |
| Entity Address, City or Town | Guangzhou |
| Entity Address, Country | CN |
| Entity Address, Postal Zip Code | 510005 |
| Document Registration Statement | false |
| Document Accounting Standard | U.S. GAAP |
| Auditor Name | Ernst & Young Hua Ming LLP |
| Auditor Firm ID | 1408 |
| Auditor Location | Guangzhou, the People’s Republic of China |
| Document Financial Statement Error Correction [Flag] | false |
| ADR [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | American depositary shares, eachrepresenting one Class A ordinary share |
| Trading Symbol | BNR |
| Security Exchange Name | NASDAQ |
| Entity Common Stock, Shares Outstanding | 708,828 |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A ordinary shares, par valueUS$0.0002 per share* |
| No Trading Symbol Flag | true |
| Security Exchange Name | NASDAQ |
| Entity Common Stock, Shares Outstanding | 85,115,600 |
| Common Class B [Member] | |
| Document Information [Line Items] | |
| Entity Common Stock, Shares Outstanding | 17,324,848 |
| Business Contact [Member] | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | No.5 Xingdao Ring Road North |
| Entity Address, Address Line Two | International Bio Island |
| Entity Address, City or Town | Guangzhou |
| Entity Address, Country | CN |
| Entity Address, Postal Zip Code | 510005 |
| Contact Personnel Name | Ms. Xiaozhi Hu |
| Contact Personnel Email Address | ir@brbiotech.com |
| City Area Code | 86 020 |
| Local Phone Number | 3403 7871 |
