Long-term foot sprain does not recover, can be solved by the following two methods: First, daily insistence on training heel exercises and ankle pump exercises, heel training each insisted on until the power is completely exhausted, 10-12 times a day, can enhance the calf triceps strength and intensity. Ankle pump training should be gradually transitioned to resistance exercises, can enhance the calf triceps and anterior neck muscle strength and intensity. The above muscle strength training can restore ankle joint stability and can reduce chronic swelling and pain symptoms after ankle sprain; secondly, if conservative treatment is ineffective, surgical treatment is needed to repair the damaged ligaments of the ankle joint, such as medial collateral ligament and lateral collateral ligament, to restore ankle joint stability. After surgery, muscle strength and intensity training around the ankle joint should still be adhered to, which can solve the chronic swelling and pain symptoms of the ankle joint.