Reduction of swelling in the fingers needs to be treated according to the cause, such as trauma, mosquito bites, rheumatoid arthritis and so on. Medications and physical therapy may be needed. 1. Trauma: When the finger is traumatized, it is easy to cause local swelling, bleeding and other symptoms. It is necessary to limit the activities of the finger, can be combined with cold compresses to eliminate swelling, and after 72 hours can choose hot compresses to promote blood circulation. 2. Mosquito bites: swollen fingers from mosquito bites, accompanied by itching, can use hydrocortisone butyrate cream, tretinoin cream and so on. 3. Rheumatoid arthritis: rheumatoid arthritis is easy to cause finger swelling, you can choose anti-inflammatory and analgesic medication, such as ibuprofen, aspirin and so on. Different diseases, patients with different physical conditions, treatment methods are different, should be standardized under the guidance of a doctor. The use of drugs need to follow the doctor’s instructions.