VEHICLE SUSPENSION DEVICE

A vehicle suspension device (1) includes a suspension device main body (5) configured to support a wheel (3) of a vehicle (2) to a vehicle body (4) of the vehicle (2); a varying device (30) configured to cause an upper connecting portion stiffness and a lower connecting portion stiffness to be variable, the upper connecting portion stiffness being a stiffness between a vertically upper portion of the suspension device main body (5) and the vehicle body (4), and the lower connecting portion stiffness being a stiffness between a vertically lower portion of the suspension device main body (5) and the vehicle body (4); and a control device (50) configured to control the varying device (30) at a time of braking of the vehicle (2) to perform control which causes the upper connecting portion stiffness to be relatively decreased and causes the lower connecting portion stiffness to be relatively increased, compared to at a time of non-braking of the vehicle (2). Therefore, the vehicle suspension device (1) exhibits an effect of appropriately reducing vibration.