The invention relates to a novel high-precision moving platform for a welding industrial robot. The novel high-precision moving platform for the welding industrial robot comprises a rotation drive device and a six-degree-of-freedom parallel mechanism located below the front end of the rotation drive device, and the rotation drive device and the six-degree-of-freedom parallel mechanism are fixedlyconnected. The novel high-precision moving platform provides supporting and position adjusting functions for the welding robot, and has high bearing capacity, good adjustability and high motion flexibility, the overall position can be adjusted, local positions are moved flexibly, the stability is high, and the welding quality and efficiency of the welding robot are indirectly improved; the rotation drive device can achieve left-right movement and front-back movement on the horizontal plane as well as rotation movement on the vertical plane, namely movement in the direction of three degrees offreedom (including two horizontal movements and one rotation) in the space; and by means of the rotation drive device, the integral large-dimension and large-orientation adjustment of the welding robot in the welding process can be ensured, and the welding performance of the welding robot is improved.