The utility model belongs to the field of laser technology, specifically disclosing a beam micro-motion adjustment device, including a base, the top of the base is welded with a fixed frame, the front end surface of the fixed frame is fixed connected with a vertical guide rod, the outer surface of the vertical guide rod is connected with a skateboard frame by sliding through a drive mechanism, the outer surface of the skateboard frame is fixed connected with a cross-guide rod, the outer surface of the cross-guide rod is connected with a sliding table by a push mechanism, and the inside of the sliding table is installed with a laser equipment through the steering mechanism activity. The beam micro-motion adjustment device, the laser equipment in the X-Y plane moved to the specified position through the drive mechanism and the push mechanism during use, if the laser equipment irradiated on the surface of the product spot changes slightly, it is necessary to change the position of the laser equipment through the slide table, you can directly fine-tune the beam direction emitted by the laser equipment through the steering mechanism, so that the spot is accurately irradiated in the area to be processed.