The invention discloses a multi-axle steering control method for improving vehicle handling stability. The multi-axle steering control method comprises the steps that the first carriage front wheel steering angle delta f and the vehicle transverse swaying angular speed r are obtained; and through the direct ratio values of the vehicle front wheel steering angle delta f and the vehicle transverse swaying angular speed r, the rear wheel steering angle delta r is calculated, and steering of rear wheels is controlled. The multi-axle steering control method has the advantages that the multi-axle steering characteristic is achieved, the first-section vehicle mass center side slip angle is kept to be zero, the stability of a vehicle can be effectively improved, the lateral response speed of the vehicle can be effectively increased, and the track following ability under the low-speed situation can be ensured.