Document and Entity Information (USD $)	6 Months Ended
	Oct. 31, 2011	Dec. 12, 2011
Document And Entity Information
Entity Registrant Name	OXYGEN BIOTHERAPEUTICS, INC.
Entity Central Index Key	0000034956
Document Type	10-Q
Document Period End Date	Oct. 31, 2011
Amendment Flag	false
Current Fiscal Year End Date	--04-30
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float		$ 42,428,912
Entity Common Stock, Shares Outstanding		23,857,671
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2012