Ultrasonic physiotherapy instrument, that is, ultrasonic therapy instrument, is a device that uses the physical properties of ultrasound for treatment, widely used in rehabilitation, orthopedics, pain and other clinical departments, the treatment time varies depending on the disease and the patient’s tolerance level, there is no uniform, clear clinical treatment time and interval, according to different clinical experience, the application of treatment interval is also different. 1, rehabilitation applications: ultrasonic therapy instrument In the rehabilitation department is mainly used for chronic soft tissue injury, cerebrovascular disease sequelae, such patients often ultrasonic therapy for 7-14 days as a course of treatment, treatment interval of 5-7 days, if the patient tolerates well, the interval can be appropriately shortened; 2, orthopedic injury department application: ultrasonic therapy instrument in the orthopedic injury department is mainly used for poor healing after fracture, rheumatoid arthritis and other diseases, such ultrasonic therapy instrument usually to 7 days as A course of treatment, the treatment interval is 3-5 days, for well-tolerated patients, the treatment cycle can be 10-14 days; 3, pain department applications: ultrasonic therapy instrument in the pain department is mainly used for sciatica, bone and joint chronic pain, cervical lumbar spine pain, such patients ultrasonic therapy instrument is usually 10-14 days as a course of treatment, the treatment interval is 7 days, for patients with unsatisfactory results, but also need to For patients with unsatisfactory results, local drug injection combined with ultrasonic therapy is also required. Therefore, there is no exact treatment time and treatment interval of ultrasonic therapy instrument in the clinic, which is mainly based on the change of the patient’s condition and tolerance, combined with the specific experience of the clinician to formulate, if the patient has better treatment effect and better tolerance, the short interval can be applied, if the tolerance is poor, the interval needs to be extended appropriately.