A vehicle damping system for reducing rail vehicle vibration, comprising: a force generation mechanism (8, 52, 53, 54) configured to be disposed in the rail vehicle including a vehicle body and a chassis at a position between the vehicle body and the chassis, the force generation mechanism in which a generative force varies in response to a command value from outside; and a control unit (9, 21, 31, 41) configured to obtain a value outputted from a traveling speed detection device that is capable of detecting or calculating traveling speed of the rail vehicle and supply the command value of the generative force to control the force generation mechanism (8, 52, 53, 54), characterized in that the control unit includes: a vehicle body behavior detection device that is configured to be provided at a freely-selected position of the vehicle body and thus capable of detecting acceleration and angular velocity of yaw and/or pitch; a storage part configured to store a map of a position of center of the vehicle body, which has been previously obtained, or an arithmetic equation for calculating the position of the center, which has been previously obtained; a center position correction part (13, 34, 44) configured to refer to the map on the basis of the value outputted by the traveling speed detection device or assign to the arithmetic equation the value outputted by the traveling speed detection device, and correct the position of the center of rotational vibration of the vehicle body; and a measured value correction part (14, 35, 45) configured to correct a value detected by the vehicle body behavior detection device, on the basis of a correction value of the center position correction part (13, 34, 44). a force generation mechanism (8, 52, 53, 54) configured to be disposed in the rail vehicle including a vehicle body and a chassis at a position between the vehicle body and the chassis, the force generation mechanism in which a generative force varies in response to a command value from outside; and a control unit (9, 21, 31, 41) configured to obtain a value outputted from a traveling speed detection device that is capable of detecting or calculating traveling speed of the rail vehicle and supply the command value of the generative force to control the force generation mechanism (8, 52, 53, 54), characterized in that the control unit includes: a vehicle body behavior detection device that is configured to be provided at a freely-selected position of the vehicle body and thus capable of detecting acceleration and angular velocity of yaw and/or pitch; a storage part configured to store a map of a position of center of the vehicle body, which has been previously obtained, or an arithmetic equation for calculating the position of the center, which has been previously obtained; a center position correction part (13, 34, 44) configured to refer to the map on the basis of the value outputted by the traveling speed detection device or assign to the arithmetic equation the value outputted by the traveling speed detection device, and correct the position of the center of rotational vibration of the vehicle body; and a measured value correction part (14, 35, 45) configured to correct a value detected by the vehicle body behavior detection device, on the basis of a correction value of the center position correction part (13, 34, 44). a vehicle body behavior detection device that is configured to be provided at a freely-selected position of the vehicle body and thus capable of detecting acceleration and angular velocity of yaw and/or pitch; a storage part configured to store a map of a position of center of the vehicle body, which has been previously obtained, or an arithmetic equation for calculating the position of the center, which has been previously obtained; a center position correction part (13, 34, 44) configured to refer to the map on the basis of the value outputted by the traveling speed detection device or assign to the arithmetic equation the value outputted by the traveling speed detection device, and correct the position of the center of rotational vibration of the vehicle body; and a measured value correction part (14, 35, 45) configured to correct a value detected by the vehicle body behavior detection device, on the basis of a correction value of the center position correction part (13, 34, 44).