There is no such thing as what is the best fish to eat for malignant tumors, and fish cannot cure malignant tumors. Fish belongs to ordinary food, it is rich in protein and other nutrients, low fat, low calorie, suitable for human body to eat. For malignant tumor patients, eating some fish on a daily basis helps to help the organism replenish nutrients. Like grass carp, silver carp, salmon, crucian carp, sea fish and other malignant tumor patients can eat in moderation. Malignant tumor belongs to a serious disease, fish and other ordinary food does not have the role of treatment of malignant tumor, so malignant tumor patients do not solve the physical pain through fish and other food, but fish and other food will not make the malignant tumor condition more serious, as long as attention to the way of eating fish, choose to boiled, steamed, and other ways of cooking fish can be. Patients with malignant tumors should pay attention to a balanced daily diet, but also need to actively go to the hospital, with professional methods to treat malignant tumors.