The invention relates to a simulation test turntable of multi-degree-of-freedom combined motion simulation. The simulation test turntable includes X-direction horizontal translation assemblies (3), a Y-direction vertical translation assembly (4), a single-axis rotary shaft assembly and the like; the X-direction horizontal translation assemblies (3) are parallelly mounted on a transition support (2); the Y-direction vertical translation assembly (4) spans the X-direction horizontal translation assemblies (3); the lower surfaces of two ends of the Y-direction vertical translation assembly (4) are connected with sliding blocks on the parallel X-direction horizontal translation assemblies (3); the Y-direction vertical translation assembly (4) moves linearly along the X-direction horizontal translation assemblies (3) under the driving of the sliding blocks; the single-axis rotary shaft assembly is mounted on the sliding block of the Y-direction vertical translation assembly (4); and a torque servo motor (5) is utilized to drive a device to be measured fixed on a table (5) to rotate, and the rotation angle of the device to be measured is measured through an angle photoelectric encoder. According to the simulation test turntable of the invention, linear motion and rotary motion-combined technology is adopted, so that the turntable simulation test device can accomplish three-degree-of-freedom movement in the space.