Painful bending of a poked finger with popping when it is straightened up may be caused by stenosing tenosynovitis of the finger. Stenosing tenosynovitis of the finger is often caused by repeated flexion and extension movements of the finger, or by congenital developmental stenosis of the tendon sheath, the most common finger is the thumb, but can also be seen in other fingers, the pain of the finger joints, often palmar, morning stiffness, as well as popping in the morning, and in severe cases, there will be dysfunction of the finger flexion and extension. It is recommended to go to the hospital as soon as possible, and consider local closure treatment at an early stage. If the condition is serious and not relieved by conservative treatment or continues to aggravate, consider surgery, which can be used to release the narrow tendon sheath.