In daily life, the finger is not only the most frequent use of joint parts, but also the highest probability of injury parts, when the finger is found swollen, do not be too afraid, this situation is mostly harmless, the main reasons are high temperature, excessive salt intake, osteoarthritis, lymphedema. Summer heat, blood vessel expansion, accelerate the skin surface heat emission to reduce body temperature, thus prompting the flow of tissue fluid in the blood vessels to the soft blood vessels caused by finger swelling, light activities can reduce the symptoms of both hands. The water and salt content of the human body to maintain dynamic balance, when the body to maintain a normal state, when the life of the salt intake is too high, destroying the water-salt balance, in order to re-establish the balance of the state, the human body needs to consume a lot of water, resulting in swelling of the fingers. When the bone and joint degenerative disease, caused by osteoarthritis, and osteoarthritis, the main clinical symptom is the finger bone joint swelling, daily attention should be paid to reduce the hand activities, to avoid aggravating the condition. Lymphatic system is an important way to eliminate body wastes and bacteria. When the lymphatic system is abnormal and the lymphatic fluid can’t be discharged adequately, it causes lymphatic enlargement, resulting in swelling of the limbs. There are many causes of swollen fingers, the above is only an analysis of common conditions, if there are inconsistencies or other symptoms, please consult the Rheumatology Department in time to avoid missing the best time for treatment.