Anticarcinogenic Effect of garlic juice on hamster buccal pouch carcinogenesis induced by 9, 10-dimethyl-1, 2-benzanthracene were studied by investigating hamster body weight gain, the skin color of and distribution of capillary blood vessels in their buccal pouches. Amount of garlic juice applied were 1% and 3% in two groups of hamsters. Results show that hamsters fed with higher doses of garlic juice gained less weight. Hamsters fed with garlic juice possessed a pale pink color buccal pouch, and a red color pouch was observed in hamsters which were not fed with garlic juice. Also, capillary vessels in hamster buccal pouches were less distinguishable in garlic juice fed hamsters compared with those in hamsters with no garlic in their diet.