Yellow sweat on the body is caused by inflammation of the patient’s hair follicles, which causes the patient’s sweat and bacteria to interact with each other, thus causing the sweat to turn yellow. In addition, other diseases can also cause yellow sweat on the body, such as diseases of the liver system. If a patient has a blockage in the bile duct or develops hepatitis or jaundice, the patient will not only have yellow skin and yellow eyes, but the sweat from the body will also turn yellow, and patients with these diseases should be treated promptly to prevent the development of liver cancer. Patients with hematologic disorders may also develop yellow sweat because of the destruction of a large number of red blood cells in the body, resulting in damage to the pathway for red blood cells to transfer to the liver and the deposition of direct bilirubin in the blood and a decrease in indirect bilirubin resulting in yellow sweat. Patients who eat yellow foods or take medications for a long time can also develop yellow sweats.