Tendon sheath cysts are one of the most common superficial tumors of the hands and feet, which belong to benign tumors and usually do not have any autonomous symptoms, but may affect the aesthetics when they grow faster, and also lead to local nerve compression and related symptoms. There are three ways to treat it. The first one is to squeeze the tumor by hand, but the recurrence rate is relatively high. The reason for this is that although the cystic fluid ruptures into the tissue space and is absorbed, the wall of the tendon sheath cyst still exists in the tissue, so it can recur again. The second is to use the closed needle method of treatment, you can use a syringe needle through the puncture maneuver, suction clean tendon sheath cyst cyst fluid, and then injected with hormones such as prednisolone, Depo-Proton and so on, after the injection of pressure bandage, the use of hormone adhesion effect to make the cystic wall of the adhesion between each other, closed. However, there is still a relatively high recurrence rate, for example, there may be 20%-30% recurrence rate. The third treatment method is surgery, which has a very low recurrence rate, as long as the surgical removal is thorough.