Microneedle therapy is a safer and more effective method derived from the small needle knife therapy. Its therapeutic features: 1, the incision is only 0.4 mm: the maximum reduction of pain for patients. 2, no anesthetic and hormone: safe and no side effects. 3, the depth of the needle is about 1 cm: the cutting site of the knife method is shallow fascia, fascia nodes, shallow in the muscle attachment points, dermal nerve jamming site, etc.. The treatment will not hurt the nerves and important blood vessels, providing clinical safety. 4.Short course of treatment, fast results: treatment time 1-2 minutes each time, once every three days, the course of 1-3 times can be. This greatly saves the patient’s treatment time. 5, micro-needle knife can immediately after the operation of normal activities: individual patients feel slight pain in the needle hole, 1-2 days can be self-relieved, no need to protect the incision and treatment, the same day can shower. No need to use antibiotics and other measures to prevent and control infection. The core theory of micro-needling method is to change the mechanical imbalance in the soft tissue. Through the bony leverage of the human body or the mechanical conduction or traction of the muscles, the deep lesions of the human body are brought to the superficial level for treatment. By loosening the superficial parts of the human body, it achieves the effect of four or two pounds. The repair function and self-regulation function of the human body are fully considered, and the self-healing function of the human body is mobilized to the maximum extent. Based on the theory of Chinese medicine meridians and tendons and the modern theory of sports medicine, ultramicro-needle knife has less pain, safety and no side effects, and is a therapy accepted by patients. The micro-needle knife is mainly used to treat various soft tissue injuries, cervical and lumbar spine diseases, various joint and muscle pains, especially for knee joint pains with obvious efficacy. Knee pain is mainly manifested as pain in the front and back, inside and outside of the knee joint after activity. In addition to excluding knee pain caused by its disease, the strain of the knee joint itself can be felt around the patella as tiny striated nodules with obvious pressure pain. According to anatomy, we view the patella as a mobile seed bone that coordinates the movement of the knee joint. If the range of motion of the patella is restricted, knee motion will also be limited. The majority of knee disorders are due to limited range of motion of the patella. Treatment involves simply releasing the fascia around the patella and the knee will move normally. We can think of the patella as a clock (1): Upstairs pain relief: 10, 11, 1, 2 points of the fascia and knotted tendon lesions. (2): downstairs pain relief: fascial and knotted tendon lesion points at 4, 5, 7, and 8 o’clock. (3): medial pain release: fascial and knotted tendon lesion points at 2, 3, and 4 o’clock. (4): Lateral pain relief: 8, 9, and 10 o’clock fascial knotted tendon foci. Most of the knee pain can be reduced immediately after the micro-needle knife release, and after 2-3 treatments, the painful points around the knee joint can basically disappear, and the knee joint function can be restored to different degrees, with obvious clinical effects.