The invention discloses a tensile integrated bionic knee joint which comprises a first rigid compression unit, a stay rope unit and a second rigid compression unit, wherein the first rigid compression unit is composed of a first rigid compression unit main body, a first support rod, a second support rod, a third support rod and a fourth support rod; the stay rope unit is composed of a first bionic cruciate ligament, a second bionic cruciate ligament, a bionic accessory ligament, a first stay rope and a second stay rope. According to the tensile integrated bionic knee joint, through the cooperative use of the bionic ligaments and other stay ropes, a rigid connecting shaft in the middle of the joint is avoided while realizing the movement of the joint on a sagittal plane, so that the friction and wearing between rigid bodies do not exist when the joint moves, and the service life of the joint is prolonged. Meanwhile the stay rope unit is made of rubber materials, has strong elasticity, can absorb a certain impact loads in the working process and improves the stability.