Patients who undergo joint replacement surgery are mostly elderly and require a high safety factor guarantee for the surgery. In case something happens during the surgery, this requires the medical staff to deal with it as fast as possible, and performing total knee replacement surgery in a hospital with poor overall professional competence may have an impact on the safety of the patient. This means that it is essential to choose the right hospital and team for joint replacement. Also, the level of cleanliness of operating rooms varies from hospital to hospital. The same level of cleanliness, but the level of management varies greatly, and poor management can have an impact on the cleanliness of the surgery. The Navy General Hospital’s laminar flow operating room is at the forefront of both hardware and management in China. Post-operative management is also important, including post-operative care within a few days and post-operative rehabilitation guidance, which can affect the incidence of complications and post-operative functional recovery.