Meniscus replacement surgery has been fever, is likely to be a typical manifestation of postoperative infection, this time to actively control the infection of fluids, if necessary, can also be carried out in the joint cavity irrigation, but also appropriate rest and observation. 1. Infusion to control infection: If you have a fever after meniscus replacement surgery, you can follow the doctor’s instructions to use penicillin or levofloxacin and other antibiotics for infusion treatment, after the local tissue infection is under control, the fever will generally go down slowly. 2. Joint cavity irrigation: fever after meniscus replacement surgery may be caused by exudate or even pus in the joint cavity. You can puncture the joint cavity and use disinfectant such as hydrogen peroxide or povidone-iodine to flush the joint cavity, which can prevent bacterial infection in the joint cavity. 3. Appropriate rest and observation: After the meniscus replacement surgery, you need to take more bed rest and prevent excessive stress on the knee joint, which will help to reduce the fever symptoms to a certain extent. If you have a fever after meniscus replacement surgery, you need to check and identify the cause of the fever, follow the doctor’s instructions to actively treat the fever and monitor the temperature, and pay attention to eat a light diet and drink plenty of water, so as to slowly return to normal.