Provided is a suspension control device. A car body (2i) and a car body (2i+1) are connected through a connecting part (3i). Rotating racks (4i) are arranged on a lower side of the connecting part (3i); left and right sides of the rotating rack (4i) are provided with vertical shock absorbers (7) connected to the rotating racks (4i) and the connecting part (3i). Damping force of the vertical shock absorbers (7) is controlled through an actuator (7A). Just above the rotating rack (4i), an accelerated speed sensor (9i) used for detecting vibration up and down is arranged. A control device (10) uses detection signals from accelerated speed sensors (9i-1,9i,9i+1) to detect vibration of car bodies (2i,2i+1), and considers vibration of all car bodies (21-2n) to calculate an ith rotating rack control instructions (ui) of the vertical shock absorbers (7)to each rotating rack (4i).