Breast cancer patients can eat some loach in their diet, which can replenish protein for the body. However, no matter what kind of food, it should be in moderation and ensure a balanced diet. Loach has high nutritional value, rich in protein, calcium, iron, phosphorus and other nutrients needed by the human body. Breast cancer patients can eat some loach to provide nutrition for the body, which is beneficial to the patients’ health; however, we should pay attention to the fact that loach contains parasites, and it must be cooked well to avoid parasitic infections, which may affect the patients’ health. Breast cancer should ensure sufficient intake of protein and vitamins to meet the body’s demand for nutrients, and at the same time, it is also possible to eat some fish, meat, milk, eggs and fresh fruits and vegetables; however, do not consume stimulating foods, such as mustard, chili, coffee and so on, so as not to affect the recovery of the condition. Breast cancer should be actively treated with standardized treatment to reduce the adverse effects on the body.