Patients with gallstones can eat protein powder. Eating protein powder will not cause gallstones to induce or aggravate cholecystitis in patients with gallstones. As the digestive organ of human body, the gallbladder is mainly located in the right upper abdomen, and its main function is to collect, concentrate and store the bile secreted by the liver. After the body eats, the bile concentrated in the gallbladder is discharged into the intestinal cavity through the contraction of the gallbladder, thus participating in the digestion of fats in food. Gallstones are formed mainly because of dissolution of bile acids with cholesterol, or insufficient bile acids. In the case of protein powder, it does not contain fat, so it does not cause indigestion or induce or aggravate cholecystitis after consumption. In summary, patients with gallstones can eat protein powder.