If the tendon sheath cyst is not large, it can be removed by squeezing. First, you should apply a hot towel to warm the area, and then massage the cyst by gently rotating and rubbing the area of the thumb in the center of the cyst, with gentle movements and gradual application of force and pressure, so that the cyst can be gradually broken. After kneading, the cyst fluid will run out from the cyst wall, and the cyst will disappear, and at this time, local pressure bandage will be applied to prevent recurrence of the cyst. If the tendon sheath cyst recurs even after repeated extrusion, surgery is required. The cyst wall must be completely removed during surgery to avoid recurrence.