Knee replacement usually refers to artificial knee joint replacement, the required cost of the surgery varies with the choice of surgical methods, the choice of prosthetic materials, the use of drugs and physical condition, etc. If the patient has both knees replaced at the same time, it will cost about 20,000 to 50,000 yuan. Generally, the knee prosthesis material can be chosen from domestic or imported products, which is about 5,000~20,000 dollars. The cost of surgery also includes pre-operative examination, anesthesia, intra-operative materials, post-operative medication, and treatment and care costs, etc. It may cost around 20,000~50,000 RMB if bilateral knee replacements are performed. In addition, depending on the level of the hospital the patient visits, the material of the prosthesis applied, and whether there are any complications related to the surgery, the specific cost will also vary to a certain extent. If a patient chooses to undergo bilateral knee replacement surgery, it is recommended that the patient consults with his or her doctor at the hospital and selects a suitable surgical plan based on his or her condition and conditions, and ultimately estimates the cost of the surgery.