The most common causes of hand swelling after walking are incorrect posture, rheumatoid arthritis and carpal tunnel syndrome. 1. Incorrect posture: some patients like to throw their hands when walking, which can easily cause obstruction of blood circulation in the hands, and the blood in the hands gathers and swells, usually resting and lifting the hands appropriately can alleviate the symptoms. 2. Rheumatoid arthritis: If the patient himself has rheumatoid arthritis, the surrounding environment is too cold when walking, which induces an acute attack of rheumatoid arthritis, which leads to the swelling of the hands after walking, and usually accompanied by redness and swelling of the hands. 3. Carpal Tunnel Syndrome: If the patient has carpal tunnel syndrome, the fatigue of the hand muscles caused by shaking the hand while walking may aggravate the degree of compression of the median nerve, which in turn leads to swelling of the hand. The causes of hand swelling after walking are many, and may also be related to cervical spondylosis, fasciitis, kidney disease, etc. If the symptoms continue to be unrelieved, it is recommended to go to the hospital in a timely manner to find out the cause of the disease, and the doctor targeted treatment.