If the right ankle ligament injury has not returned to normal after four months, it is necessary to review the MRI of the ankle joint early to see the extent of the ligament injury, and also to check the stability of the ankle joint. If the stability of the ankle joint is still good and the MRI shows a partial tear, then conservative treatment can be continued and attention should be paid to avoid long-term strain on the ankle joint, cold and a lot of physical activity. Wear high-top shoes when walking, as this will stabilize the ankle joint and promote ligament repair. If the ligament shows complete rupture on MRI and there is obvious ankle instability during ankle joint check, then consider surgery to perform suture and reconstruction of the ligament. Therefore, if the ankle ligament injury has not recovered in four months, it is important to go to a specialist for early examination and physical examination to assess the treatment options for surgery based on the patient’s condition.