Document and Entity Information	9 Months Ended
	Jan. 31, 2012
Document And Entity Information
Entity Registrant Name	BIOSYNERGY INC
Entity Central Index Key	0000715812
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?	No
Entity Filer Category	Smaller Reporting Company
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2012