There are many reasons why the swelling of a broken foot never goes down, which may be related to factors such as premature activity, soft tissue edema or fracture, etc. Depending on the severity of the condition, the treatments vary, including reduction of activity, physical therapy, medication, surgery, and so on. 1. Premature activity: without sufficient rest, premature weight-bearing exercise or standing for a long time after a foot fracture, resulting in swelling not reduced or even aggravated, the swollen lower limb should be elevated and activities should be reduced, which is conducive to the elimination of swelling. 2. Soft tissue edema: after a broken foot leads to ligament and tendon injuries, tendon and ligament recovery time is long, treatment can be given to physical therapy, hot compresses with oral non-steroidal drugs, such as diclofenac sodium, etc., to eliminate the edema, the serious need for surgical treatment. 3. Fracture: a broken foot leads to fracture, resulting in blood circulation disorders, the formation of local hematoma, the treatment can be oral non-steroidal anti-inflammatory drugs, such as diclofenac sodium, etc., and given to the plaster for immobilization. Serious cases need to be treated with surgery. There are many reasons why the swelling of a broken foot does not go down, such as a broken foot does not go down, it is recommended to consult a doctor in a timely manner to clarify the cause of the disease and then treatment.