The invention belongs to the field of ship engineering, and provides a device for ship true wind measurement and calibration. A transverse swing calibration module and the longitudinal swing calibration module are linked to simulate the spatial movement of the ship body under the disturbance of wind wave flow; the transmission distance and speed parameters of a swing calibration sliding table areadjusted through an upper computer; a ship swing simulation table is controlled to simulate pitching and rolling motions of a ship at different swing speeds and different swing angles, and a ship truewind direction and wind speed calibration database with the swing angles and the swing speeds as variables is formed. The device effectively simulates the transverse and longitudinal swinging motionof a ship, is used for calibrating a ship true wind measurement device, reduces the dynamic measurement error of the wind direction and wind speed in a ship space motion state, and improves the calibration flexibility and reliability of the ship true wind measurement device.