Posterior horn of meniscus injury can take non-steroidal anti-inflammatory drugs, nutritive cartilage drugs and so on. 1. Non-steroidal anti-inflammatory drugs: a class of drugs with antipyretic, analgesic, anti-inflammatory effects, including celecoxib, acetaminophen, etc., can effectively reduce inflammation and relieve knee pain. Taking this kind of drugs, may be gastrointestinal adverse reactions, so it is not recommended to take for a long time, allergic to non-steroidal anti-inflammatory drugs, peptic ulcers or bleeding is prohibited. 2. Nutritional cartilage drugs: such as glucosamine sulfate, can improve cartilage metabolism, improve cartilage repair ability, and thus protect the meniscus and promote its recovery. It is forbidden for those who are allergic to glucosamine. All of the above drugs need to be used under the guidance of a doctor, if there is a posterior horn of the meniscus injury, it is recommended that the patient consult a doctor in a timely manner, follow the doctor’s instructions for the use of drugs, according to the condition of the determination of the treatment program.