Minimally invasive surgery is a direction that surgeons are working towards. Minimally invasive bunion surgery is still being explored and there is no mature minimally invasive method, and some minimally invasive methods have drawbacks. Some minimally invasive methods have drawbacks, such as small incisions because of exposure, which can damage the inner tissues, including the extensor tendon and flexor tendon, etc. Some minimally invasive methods have poorer orthopedic ability for large deformities because of exposure, and there is a possibility of recurrence after the surgery. At present, the international community, including Germany, has been making various minimally invasive bunion treatment devices for a long time, but it is difficult to popularize the devices because they are more expensive. At present, the domestic minimally invasive method is mainly to grind off the bone with a small grinding wheel, and to correct the deformity after grinding off the first metatarsal bone, which has advantages and disadvantages, and the ability to correct large fracture and large deformity is not complete, and the ability to correct the deformity is relatively poor, and the incision is small, which may cause tarsal bone injury.