The following causes of hand swelling are common in the elderly: first, hand trauma, there will be obvious local exudation and edema after hand trauma, especially in open injuries, the lesions are more serious, the patient will have pain and limited finger movement at the same time, and taking X-ray films sometimes reveals serious fractures and dislocations. Second, internal diseases, such as severe hypoproteinemia, anemia and heart failure, can cause increased exudation from the soft tissues of the hand, resulting in swelling of the hand, and may be accompanied by clinical symptoms of the primary lesion, such as chest tightness, panic, dizziness and other manifestations. Prompt diagnosis and treatment can bring about rapid relief of clinical symptoms. Patients should also pay attention to maintaining healthy habits in general to avoid the above lesions and prevent symptoms such as hand swelling.