Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Apr. 11, 2023	Jun. 30, 2022
Document Information Line Items
Entity Registrant Name	REBORN COFFEE, INC.
Trading Symbol	REBN
Document Type	10-K
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		13,163,126
Entity Public Float			$ 140,180,984
Amendment Flag	false
Entity Central Index Key	0001707910
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	false
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-39727
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-4752305
Entity Address, Address Line One	580 N. Berry Street
Entity Address, City or Town	Brea
Entity Address, Country	CA
Entity Address, Postal Zip Code	92821
City Area Code	(714)
Local Phone Number	784-6369
Title of 12(b) Security	Shares of Common Stock, $0.0001 par value per share
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Document Financial Statement Error Correction [Flag]	false
Auditor Name	Kreit & Chiu CPA LLP
Auditor Location	New York, NY
Auditor Firm ID	6651