Document and Entity Information	6 Months Ended
	Oct. 31, 2012	Dec. 12, 2012
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, 2012
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 Common Stock, Shares Outstanding		33,133,895
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2012