Tendon sheath cysts can be pressed and broken in the following ways: 1. To fully expose the tendon sheath cyst, it is usually necessary to fully expose the tendon sheath cyst to the body surface by thoroughly flexing or straightening the joint. For example, for tendon sheath cysts on the dorsal side of the wrist joint, full flexion of the wrist joint is needed to fix the tendon sheath cyst and make it more visible. 2. To fully increase the pressure inside the tendon sheath cyst, on the basis of full exposure, the tendon sheath cyst needs to be fixed by first using the auxiliary finger on one side to push on it. At this point, the patient can clearly feel the increased pressure inside the tendon sheath cyst on the other side and its relative fixation.3. After the above preparations, the relatively weak part of the tendon sheath cyst should be found and the wall of the tendon sheath cyst should be squeezed through the bilateral fingers by sudden finger pressure. It is important to note that this operation can only be performed by medical professionals who are more skilled and less likely to cause related injuries. If the patient squeezes it himself, it is often not easy to break it, but also easy to cause local soft tissue contusions.