Cab suspension after suspension structure, including a cab around each after the suspension assembly, after the cab suspension assembly including the cab suspension bracket, fixed on the frame longitudinal beam, the cab suspension bracket after the lower inclined upward after articulated suspension shock absorber, suspension swing after the upper hinge connecting plate, the other end of the suspension shock absorber to the rear suspension swinging hinged on the other side of the connection plate; The rear suspension swing connecting plate is hinged on the hydraulic lock, the hydraulic lock is connected with the rear suspension bracket of the cab, the rear suspension bracket of the cab is fixedly connected with the cab; And the hydraulic lock is communicated with the hydraulic oil pump. The left and right sides of the structure of the utility model are provided with shock absorbers. Under the joint action of the two shock absorbers, the vertical and transverse displacement generated is very small, so as to improve the working comfort of the driver and reduce the fatigue state of the driver's body.