The invention discloses a cementless hip joint prosthesis. The cementless hip joint prosthesis comprises a femoral stem (1), a femoral neck (2), a ball head (3) and an angle adjusting device. The femoral neck (2) is hinged to the near end of the femoral stem (1) through a pin (4), the ball head (3) is arranged at the other end of the femoral neck (2), and an acetabulum (5) is installed on the outer side of the ball head (3). The angle adjusting device is composed of a tube body (6), a movable shaft (7) and locking bolts (8), one end of the tube body (6) is arranged on the femoral stem (1), one end of the movable shaft (7) is inserted into the femoral stem (1), the other end of the movable shaft (7) is hinged to the lower end of the femoral neck (2), and the locking bolts (8) are connected with the tube body (6) and abut and press against the movable shaft (7). The cementless hip joint prosthesis has the advantages of being compact in structure and suitable for patients of different ages, enabling the angle between the femoral neck and the femoral stem to be adjusted at random, and accelerating the restoration of the patients.