The conservative treatment of knee meniscal injury is as follows: a. During the treatment period, it must be strictly prohibited to go down to the ground, preferably using external fixation in plaster or brace for four weeks, while the knee joint is treated with microwave physiotherapy and blood-stasis-activating drugs, which can be taken orally or applied externally. If there is a large amount of joint fluid in the knee joint, a syringe can be used to extract the joint fluid. Second, sodium vitrate can also be injected into the joint to promote the recovery of the meniscus. Sodium vitrate has a nutritional effect on the meniscus, which can promote the absorption of nutrients and accelerate the repair of the meniscus. Generally, after a month or so of strict conservative treatment, the meniscus damage in the knee joint is expected to be reduced or even recovered significantly.