Reducing swelling and pain requires treatment based on the cause of the disease. There is no best and fastest way. Common causes include trauma, synovitis, post-surgery, etc. Treatment includes general treatment, medication and surgery. 1. Trauma: Infection caused by trauma that is not treated in time or not treated properly can lead to swelling and pain. Antibiotics such as cefradine and cefazolin can be used. 2. Synovitis: synovitis occurs when the synovial tissue secretes a lot of inflammatory synovial fluid, resulting in a large amount of fluid in the joints, and the joints are swollen secondary to stimulation of the sensory nerves causing pain symptoms. Localized hot compresses can be applied, and medications such as Loxoprofen sodium and ibuprofen can also be used. 3. After surgery: when the limb after surgery local bleeding can form hematoma, hematoma can stimulate the local tissue causing pain symptoms. You can use ice packs to apply cold compresses within 72 hours, and then change to hot compresses after 72 hours, which can reduce swelling and relieve pain as soon as possible. It is recommended that patients go to the hospital in time, the above drugs should be used under the guidance of a doctor.