Patients must be hospitalized after arthroscopic surgery for meniscus injuries because arthroscopic surgery is not a mere arthroscopist act, it requires anesthesia, nursing care, and so on. One person definitely cannot accomplish it, and the risk of surgery definitely exists. Although arthroscopy is minimally invasive surgery, but the patient’s physical requirements, such as the patient has no preoperative hypertension, diabetes, etc. need to be adjusted. In addition, the anesthesiologist for the patient’s cardiopulmonary function requirements are also higher, some patients are not suitable for lumbar anesthesia, can only do general anesthesia, anesthesiologists need to assess the patient before the operation. Although minimally invasive, arthroscopic surgery is also invasive surgery, there are surgical risks, such as the risk of infection, the risk of damage to the blood vessels and nerves, and therefore need to be hospitalized. After hospitalization, the surgeon sets the surgical plan through comprehensive consideration and evaluation, as well as discussion of the injury. In addition, arthroscopic surgery is a relatively minimally invasive procedure and can be hospitalized for a short period of time after surgery. If there are no special complications, the patient can usually be discharged from the hospital on the 2nd-3rd day after surgery.