Twenty days after meniscoplasty, knee joints will have different degrees of swelling, which is a normal phenomenon, no need to worry about, can be eliminated through medication and non-pharmacological treatments to eliminate swelling, and do a good job of postoperative care. 1. Medication Mannitol, Mazolin and other drugs can be used to promote swelling. Generally speaking, in addition to swelling, patients will also experience pain after surgery, and then you can follow the doctor’s instructions to take ibuprofen and other analgesic drugs to improve the patient’s discomfort. 2. Non-drug treatment (1) Braking: The knee should be braked and rested. If the swelling of the knee is obvious, it is not recommended to go down to the ground too early to avoid aggravating the condition. It is recommended to go down to the ground after the swelling is eliminated or the pain basically disappears. (2) Elevation: Elevation of the affected limb is not only good for eliminating edema, but also good for lower limb circulation. When elevating the affected limb, attention should be paid to make the foot higher than the knee joint and the knee joint higher than the hip joint. (3) Functional exercise and physical therapy: pay attention to wound hygiene, apply pressure bandage to the wound, exercise the leg, ankle, quadriceps and other parts of the body, infrared ray and ultrasonic treatment to the wound can also effectively reduce postoperative swelling. In addition, the symptoms of postoperative knee swelling can also be relieved by localized hot compresses, physiotherapy, light massage and acupressure under the guidance of the doctor. In most cases, the swelling can be eliminated in a timely manner. If the swelling persists, accompanied by pain, fever and other symptoms, consider the occurrence of infection and other abnormalities, it is recommended that timely treatment with the help of a doctor.