If a tendon sheath cyst occurs in the palm of the hand, it can be squeezed with the thumbs of both hands to break the tendon sheath cyst, and the jelly-like substance inside will be absorbed by the surrounding tissues, and the tendon sheath cyst will be eliminated, but it is easy to recur. If the cyst recurs, it can be punctured with a hollow needle to extract the jelly-like material inside, and then absorbable wires can be inserted into the cyst through the hollow needle, so that the absorbable wires can form an inflammatory stimulus inside the tendon sheath cyst, and the walls of the tendon sheath cyst will adhere together over time, and then the cyst will disappear. If there is no relief through the above methods, the only way to cure the tendon sheath cyst is to cut the skin surgically, expose the tendon sheath cyst, remove the wall of the cyst as well as the jelly-like material inside, and then suture the skin, which is a radical cure for tendon sheath cysts, and it will not recur after the treatment.