Finger stiffness and pain in the grip may be tenosynovitis, rheumatoid arthritis, carpal tunnel syndrome and other diseases. 1. Tenosynovitis: the etiology of this disease is more complex, if it is stenosing tenosynovitis, it is mainly related to chronic strain, trauma and other reasons; if it is acute septic tenosynovitis, it is related to pathogenic microbial infections; if it is tuberculous tenosynovitis, most of them are caused by the spread of tuberculosis of neighboring bone and joint. The main symptoms are finger pain, activity limitation, fever and so on, so some patients will appear stiff and painful fingers can not hold together. 2. Rheumatoid arthritis: the cause of the disease is not yet completely clear, research shows that it may be related to genetics, autoimmunity, smoking, pathogenic microbial infections and other factors. Commonly affected joints are fingers, wrists, palms, etc. Typical inflammatory changes in the joints are prolonged stiffness, swelling, pain, deformity, etc. Therefore, some patients may have stiff and painful fingers that can’t be gripped together. 3. Carpal tunnel syndrome: the occurrence of this disease is related to exogenous compression, the lumen of the carpal tunnel becomes smaller, and the contents of the lumen increase. The main symptom is the hand, wrist sensory abnormalities, often distributed in the index finger, middle finger, etc., the patient will appear finger numbness, pain, sensory loss, activity disorders and other symptoms, can be manifested as finger stiffness and pain grip. To summarize, there are many reasons for the stiffness and pain in the fingers, and it is necessary to go to the hospital to clarify the cause of the disease.