Meniscus injury conservative treatment for more than a year has not healed, first of all should identify the cause, in addition to consider surgical treatment. Conservative treatment of meniscus injury if the effect of conservative treatment is not ideal, if more than a year of conservative treatment has not healed, you should consider that conservative treatment is ineffective. Because the meniscus injury in many cases conservative treatment is not effective. It is due to the basic conditions of meniscus injury decided. Arthroscopic surgery can be considered according to the condition. 1. Meniscus repair : It is mainly applicable to those who have longitudinal tear in red and white area and red area, which can be healed. Arthroscopic tear dilatation, row suture surgery, can also be used to absorbable nail repair. The most favorable conditions for repair are more than 8 weeks after the injury, age <30 years old, tear <2.5cm, lateral meniscus tear. 2. Meniscectomy: When the meniscus cannot be repaired by suture, partial meniscectomy can be considered, such as transverse meniscus, horizontal meniscus and lingual tear. 3. Meniscectomy: It is suitable for severe crushed tear. It is recommended that patients can undergo regular surgical treatment under the guidance of doctors according to the degree of injury.