It is not scientific to say that boiling potatoes in juice is a cure for cancer. Cancer treatment after diagnosis is a comprehensive treatment based on surgical resection. Cancer is a life-threatening malignant disease caused by many factors, such as heredity, gene mutation, etc. After diagnosis, the main treatment methods are surgical resection, radiotherapy, targeted therapy and immunotherapy. The main treatments after diagnosis are surgical resection, radiotherapy, targeted therapy, immunotherapy, etc. Meanwhile, radiotherapy and chemotherapy can also be carried out after surgery to enhance the therapeutic effect. Cooked potato juice does not play a role in treating cancer, but it can supplement certain nutrition and energy for cancer patients. Patients should actively cooperate with doctors for treatment after discomfort or diagnosis of cancer, instead of believing rumors and eventually delaying treatment.