The present invention provides a breast cancer conditioning convenience food, which uses L- glutamine as the main raw material, is based on the physical characteristics of breast cancer patients, is directed by essence of traditional Chinese medicine theory and has targeted reasonable compatibility: extract of dendrobium, semen coicis, oysters, dandelion, hawthorn, fructus perillae, honeysuckle flower, dates, tangerine red epicarp, longan, date seed, cinnamon, licorice, winter collybia, dried tangerine peel, Poria, siberian solomonseal rhizome, ginseng, gardenia, common selfheal spike, peppermint, appendiculate cremastra pseudobulb and other medicinal and edible herbs. Then vitamins and minerals are added to obtain the food. The food produced according to the formula in the present invention is easy to dissolve, fast to absorb and utilize, and improves the nutritional status of the breast cancer patients. The bioactive components in the medicinal and edible herb extract have assistance effects of improving immunity of human body, thereby playing a role of suppressing cancer and anti-cancer. The food is suitable for breast cancer patients, especially for the cancer patients received radiotherapy or chemotherapy to eat. Therefore, the food has unique advantages of combining triple effects of diet cure, prevention and conditioning.