It is not normal to walk with a little pain a month after a mild ankle muscle strain. Most of the mild ankle muscle strain is caused by walking or running and other sports sprain ankle joint, generally take conservative treatment, such as early 72 hours to give local ice brakes, compression bandage, avoid weight-bearing on the affected limb, elevate the affected limb, etc., 2 ~ 4 weeks can gradually recover. If walking is still painful after 1 month, it may suggest the existence of more serious injuries, such as ligament tear, ligament rupture or even fracture. Prompt medical attention should be sought to identify the cause of the injury, which may require immobilization in a cast or brace, or even surgery. Patients with mildly strained ankle muscles should actively seek medical attention and standardized treatment under the guidance of a doctor to avoid delays.