Whether a tendon sheath cyst can play table tennis needs to be judged according to the condition. If the cyst is small and there are no obvious clinical symptoms, you can play table tennis appropriately. If the cyst is large, with pain and limited joint movement, playing table tennis is not recommended. Tendon sheath cysts are benign swellings near joints, ligaments or tendons, usually found on the dorsal or metacarpal side of the wrist, but also on the ankle, groin and other parts of the body, mainly due to degeneration of joints, chronic strain and other reasons. If the cyst is relatively small, it will not cause significant impact on the joint activities, you can play table tennis properly, but you should wear protective gear, pay attention to the intensity of the activities to avoid overuse of the joints. If the cyst is large, it is not recommended to play table tennis to avoid further injury. When tendon sheath cysts appear, it is recommended that patients go to the hospital for examination in time to avoid delaying the condition.