The garlic has enhances the organism immunity, guards against the cancer to treat the cancer the function. The medical research discovery, in the garlic has one kind to contain the sulfur the ingredient, can eliminate the careinogen nitrosamine, therefore has guards against the cancer specially guards against the stomach cancer function. Certainly, accidentally 12 living expenses garlics not anti- cancer effect. The driven experiment calculated that, every day eats about 10 grams, persisted for a long time possible to be effective. This experimental result obtains the confirmation in certain clinical explorations