Weakness of the middle finger of the right index finger may be caused by localized pressure, trauma or cervical spondylosis. 1. Localized pressure: poor blood circulation is caused by the pressure on the blood vessels and nerves innervating the right index finger and middle finger due to poor body position, which can be relieved by lifting the pressure and changing the body position. 2. Trauma: Injury to the wrist area, resulting in nerve damage, can also occur in the right index finger, middle finger weakness, the feeling of not being able to make strength. 3. Cervical spondylosis: Cervical spondylosis, cervical disc herniation, compression of the nerve roots that innervate the right hand movement may also lead to the weakness of the right index finger and middle finger. There may be other reasons for the weakness of the right index finger and middle finger, if the improvement is not obvious after changing the position, you should go to the hospital in time, and the doctor will judge the cause of the disease according to the symptoms, signs and auxiliary examination.