The invention discloses an artificial hemi-pelvic prosthesis which comprises a fixed base and a spherical cup and further comprises a connecting body which is used to connect the fixed base and the spherical cup, and a screwing piece. The connecting body is composed of two plate type connecting arms which are fixed into a whole body. Each plate type connecting arm is provided with a bolt through hole which matches with the screwing piece. The angle between the axes of the two bolt through holes is 75-90 DEG C. The side of one of the plate type connecting arm, which is not provided with a boltthrough hole, is connected with the side of the other plate type connecting arm, on which the bolt through hole is arranged, and the angle between the two sides is at least 90 DEG C. The two plate type connecting arms of the connecting body are connected with the fixed base through the bolt through holes respectively by the screwing piece and the spherical cup. The artificial hemi-pelvic prosthesis is simple to assemble and the angle can be adjusted at two approximately perpendicular planes, thus large in flexibility degree. The artificial can satisfy the requirements of operation emergencies, and is convenient to install, and can save time, quicken the process of the operation and make the operation safer.