The first is to squeeze the tenosynovial cyst with both thumbs. After the tenosynovial cyst is squeezed, the jelly-like material inside will be absorbed by the surrounding tissues, and the tenosynovial cyst will be eliminated, but there is a possibility of recurrence. The second type of treatment is to puncture the tendon sheath cyst with a hollow needle to extract the jelly-like substance, and then insert absorbable wires through the hollow needle. These absorbable wires form an inflammatory stimulus within the tendon sheath cyst, and after a long period of time, the walls of the tendon sheath cyst will adhere together, and the accepted cyst will also disappear. This treatment is simple, less invasive and less expensive. The third type of treatment involves surgical incision of the skin to expose the tendon sheath cyst, then the walls of the tendon sheath cyst and the jelly-like material inside are completely removed, and the skin is sutured back together. This is a radical treatment for tendon sheath cysts, and they usually do not recur after treatment.