Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2023	May 01, 2023
Document Information Line Items
Entity Registrant Name	Jasper Therapeutics, Inc.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		110,326,184
Amendment Flag	false
Entity Central Index Key	0001788028
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Mar. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	false
Entity Ex Transition Period	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-39138
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-2984849
Entity Address, Address Line One	2200 Bridge Pkwy
Entity Address, Address Line Two	Suite #102
Entity Address, City or Town	Redwood City
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94065
City Area Code	(650)
Local Phone Number	549-1400
Entity Interactive Data Current	Yes
Voting Common Stock, par value $0.0001 per share
Document Information Line Items
Trading Symbol	JSPR
Title of 12(b) Security	Voting Common Stock, par value $0.0001 per share
Security Exchange Name	NASDAQ
Redeemable Warrants, each whole warrant exercisable for one share of Voting Common Stock at an exercise price of $11.50
Document Information Line Items
Trading Symbol	JSPRW
Title of 12(b) Security	Redeemable Warrants, each whole warrant exercisable for one share of Voting Common Stock at an exercise price of $11.50
Security Exchange Name	NASDAQ