The invention discloses a wall plate part bending and warping deformation measurement device.The wall plate part bending and warping deformation measurement device comprises two main scales, a main scale sliding block is arranged between the two main scales and provided with a main scale measurement meter, the two main scales are vertically connected with an auxiliary scale and a sliding scale, the auxiliary scale is provided with an auxiliary scale measurement meter, the sliding scale is provided with sliding sleeves, and the sliding sleeves are provided with sliding scale metering meters.By means of the wall plate part bending and warping deformation measurement device, on-site online measurement of bending and warping deformation of a part profile can be achieved.A measurement method includes the specific steps that 1, part length, part width and the planned measurement direction are determined; 2, the measurement area is determined; 3, the measurement device is calibrated; 4, sliding supporting feet and the sliding sleeves are arranged on the measurement area, and sliding scale supporting feet are located on the measurement area; 5, readings of the measurement scales are recorded, and bending and warping deformation of the part profile is calculated.The wall plate part bending and warping deformation measurement method is simple in operation.