Minimally invasive joint replacement has become a hot spot in orthopedics and represents a trend for future development. Minimally invasive total hip replacement has clinical features such as small surgical incision, less blood loss, shorter hospital stay and faster recovery for patients, which can be divided into two major categories in terms of minimally invasive concept. One category is to make the incision of traditional hip replacement surgery smaller, and the deep access is almost the same as traditional surgery, such as the posterior lateral or lateral hip access surgery, which is called small-incision total hip replacement; the other category is called minimally invasive total hip replacement, that is, the OCM access and double-incision access hip replacement, which are unique and innovative in terms of incision and deep stripping. The incision and deep dissection of these procedures are unique and innovative, which emphasize more on entering from the muscle gap without cutting off the gluteus medius and hip external rotators, thus conforming to the true meaning of minimally invasive surgery. The OCM approach was first reported by Munich Hospital and is now more popular in Germany and Europe. The surgery is performed through the anterior border of the gluteus medius muscle, which allows for early functional hip abduction without the need for a neutral shoe, and the long-term hip mobility reported in the literature is superior to that of the traditional incision. Since the surgical incision is small, no muscle is damaged, and only the damaged bone is treated, the postoperative recovery is significantly accelerated, and it is usually possible to walk with a walker about 3 days after surgery, and the pre-injury level can be restored in about a month. The hospital stay is greatly shortened. Surgical complications are reduced, such as the incidence of postoperative deep vein thrombosis is greatly reduced compared to the traditional approach. The differences from the traditional surgical approach result in a longer learning curve for the surgeon. The department can now routinely perform minimally invasive total hip surgery with positive surgical outcomes, and was a keynote speaker at the 2014 National Orthopaedic Annual Meeting COA, which was unanimously recognized by the industry. It is believed that with the passage of time, it will replace some of the traditional total hip surgery habits, providing a reduction in medical expenditures and alleviating patients’ pain!