This study was performed to find the changes in volatile sulfur compounds of garlic under various cooking conditions. The volatile sulfur compounds of garlic were identified with GC and GC/MS. The results of the study were summarized as follows : Chopped garlic boiled for 30min and 60min had more volatile sulfur compounds than that of fresh garlic, while 2-vinyl-4H-1,3-dithiin decreased by boiling. Whole garlic boiled for 30min and 60min had less volatile sulfur compounds than that of fresh garlic, while allyl methyl trisulfide and diallyl trisulfide increased by boiling. Analyzing the change of volatile sulfur compounds under cooking methods, the order that showed more volatile sulfur compounds was as follows : grilling > frying > steaming > boiling > microwave oven cooking > pressure cooking.