Finger joint pain in the morning may be caused by chronic strain injury, flexor tendon stenosis tenosynovitis and rheumatoid arthritis can also lead to finger joint pain in the morning. 1. Chronic strain injury: too much activity in the finger joints during the day, resulting in the surrounding muscles and ligaments are in a state of strain, generating a large number of inflammatory metabolites, which can stimulate the peripheral nerves, and then produce symptoms of finger joint pain. 2. Flexor tendon stenosis tenosynovitis: it often occurs in the thumb, at the initial stage of the disease, it produces popping and pain when the fingers are flexed and extended, inflexible joint activities, swollen joints, etc. In severe cases, the joints cannot be straightened or flexed, and the symptoms of pain in the joints of the fingers are often seen. 3. Rheumatoid arthritis: mostly occurs in the proximal interphalangeal joints, the affected joints will appear morning stiffness, pain, tenderness, swelling, and symptoms of restricted movement. Finger joint pain in the morning may also be caused by other reasons, after the symptoms, you need to go to the hospital in time for examination, under the guidance of a professional doctor for treatment.