The diet for postoperative patients with bile duct cancer is commonly as follows: 1. Patients can eat high-protein food, which can be divided into animal protein and vegetable protein, such as fish, chicken and beef, which are high-quality animal protein, and soybean products, which are high-quality vegetable protein; 2. Choose food with low fat content, because food with too much fat will cause residual bile duct spasm and make patients have pain and stomach discomfort. Therefore, postoperative patients eating characteristics of two points, choose high-quality protein content and low-fat diet.