| Cover | Jan. 17, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 17, 2024 |
| Entity File Number | 001-41479 |
| Entity Registrant Name | REBORN COFFEE, INC. |
| Entity Central Index Key | 0001707910 |
| Entity Tax Identification Number | 47-4752305 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 580 N. Berry Street |
| Entity Address, City or Town | Brea |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92821 |
| City Area Code | 714 |
| Local Phone Number | 784-6369 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share |
| Trading Symbol | REBN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
