Cancer patients can eat soy products, which are rich in protein and amino acids, and also contain certain vitamins, eating soy products is good for cancer patients. However, some cancer patients are not suitable to eat soy products, such as liver function is particularly poor cancer patients tend to high-quality protein-based, such as soy products and other foods containing plant protein is generally recommended to eat, eat more will increase the burden on the liver and even cause hepatic encephalopathy. Intestinal function is not very good patients eat soy products is not easy to digest and even cause diarrhea, soy products will also produce a lot of gas in the intestinal tract, if the intestinal peristalsis is very poor may also lead to intestinal obstruction, so this kind of patients need to eat less soy products or not eat.