The invention provides a medicament for treating digestive tract side effects caused by cancer chemotherapy, comprising the following medical materials: 700-800g of astragalus, 250-300g of dwarf lilyturf root, 200-250g of red ginseng, 200-250g of atractylodes, 200-250g of poria cocos, 200-250g of liquorice, 200-250g of figwort, 250-350g of dark plum, 200-250g of zedoary turmeric, 200-250g of angelica sinensis, 200-250g of ageratum, 200-250g of tangerine peel, and 250-350g of prepared pinellia tuber. The medicament for treating digestive tract side effects caused by cancer chemotherap obviously relieves vomiting response caused by copper sulfate and cisplatin, reduces the time of vomiting, delays vomiting generation, has remarkable function of reducing animal toxic side effects caused by anticancer drugs, and can improve the body immunity.