Early finger swelling is related to local inflammation, generalized edema, drugs, and lifestyle. 1. Local inflammation: rheumatoid arthritis, rheumatoid arthritis, due to synovial swelling and joint cavity effusion, may show finger swelling. Tendon sheath can show finger swelling due to tenosynovitis caused by repeated mechanical friction. 2. Systemic edema: left heart failure can lead to cardiogenic edema, nephritis and other causes of nephrogenic edema, systemic edema spread to the finger area, finger swelling can occur. 3. Drugs: application of insulin, androgens, estrogens, etc. can lead to sodium retention and finger swelling. 4. Lifestyle: Insufficient calorie intake for a long period of time can cause albumin to drop, leading to a decrease in intravascular colloid osmotic pressure, which can lead to finger swelling. There are many reasons for finger swelling, it is recommended that patients with persistent or recurring finger swelling go to the hospital in a timely manner, and standardize the diagnosis and treatment under the guidance of the doctor.