In recent years, hip arthroplasty has been widely practiced all over the world. Thanks to the joint efforts of material scientists and physicians, the development of new hip prostheses has advanced rapidly, and some hip prostheses with new design concepts and high-tech materials have been used in clinical practice with very good results. This article briefly introduces three standard hip prostheses for patients to choose from. A new type of joint prosthesis material – black crystal, black crystal prosthesis can help you resume normal activities in a short time due to its extraordinary hardness, finish and resistance to wear and impact. In joint replacement, wear and tear between prostheses is always the first issue to be considered. During joint movement, friction between the two prosthetic components occurs continuously and the surface of the prosthesis wears, producing many small debris that are invisible to the naked eye. Black crystal prosthesis because of the use of the highest quality metal, its hardness, finish, wear resistance and scratch resistance compared to other types of prosthesis has certain advantages, it is more wear-resistant than the traditional cobalt-chromium-molybdenum alloy material, harder than ceramic materials. Ceramic materials have many advantages As early as a dozen years ago, the U.S. Food and Drug Administration approved the use of ceramic heads for total hip replacements in clinical practice. Simply put, the ceramic-to-ceramic composition of the interface is very resistant to friction, but it has more advantages than that: 1, with ceramic material prosthesis, the fracture rate around the prosthesis after joint replacement surgery is 1/25,000, a rate lower than other types of prosthesis. 2. Ceramic-to-ceramic prostheses allow the surgeon to apply a larger ball head. When the ball head size is increased, the range of motion of the joint is increased and the rate of dislocation is reduced, and the patient’s daily activities, including playing tennis and golf, can be maximized. 3. The ceramic-to-ceramic interface is smoother, helping to reduce wear on the surface of the prosthesis. In hip joint simulation tests, the ceramic-to-ceramic contact wear rate is lower than that of metal or plastic. 4, ceramic head has good biological inertia, its debris is less damaging to the body than metal debris and less likely to cause inflammatory reactions in the body. So ceramic to ceramic joints are accepted by more and more patients and doctors.