Document and Entity Information
3 Months Ended
May 31, 2014
Jul. 09, 2014
Document and Entity Information    
Entity Registrant Name BSD MEDICAL CORP  
Document Type 10-Q  
Document Period End Date May 31, 2014  
Amendment Flag false  
Entity Central Index Key 0000320174  
Current Fiscal Year End Date --08-31  
Entity Common Stock, Shares Outstanding   39,689,209
Entity Filer Category Smaller Reporting Company  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Well-known Seasoned Issuer No  
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus Q3