Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Document and Entity Information
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Registrant Name	BIO-PATH HOLDINGS INC
Entity Central Index Key	0001133818
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Trading Symbol	BPTH
Entity Common Stock, Shares Outstanding		2,883,777
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false