The invention belongs to the technical field of vehicle board surface grinding, in particular to a surface treatment device for vehicle carrying board producing and manufacturing. Aiming at the problem that an existing grinding operation mode is low in efficiency, and poor in grinding quality, and a vehicle carrying board is not conveniently fixed during grinding, the following scheme is providedat present. According to the scheme, the device comprises a rack, wherein a conveying belt device is arranged on the rack, boards are arranged on the conveying belt device in a conveyed mode, a metalshell is arranged at the top of the rack, a push rod air cylinder is arranged on the metal shell, a lifting board is fixedly connected to the output end of the push rod air cylinder, two connecting rods are slidably connected to the bottom of the lifting board, the same shell is fixedly mounted at the bottom ends of the two connecting rods, a double-head motor is arranged at the top of the shell,a roller is rotationally mounted at the bottom of the shell, and a grinding sleeve is fixedly arranged at the outer side of the roller in a sleeving mode. According to the surface treatment device, the grinding efficiency and the grinding quality of the boards are improved, the boards are conveniently fixed during grinding, and normal machining is not influenced.