The invention relates to a multi-dimensional adjusting cross slider device comprising a perpendicular slider (291) which is connected to a welding gun and which drives the welding gun to move perpendicularly and a horizontal slider (292) which is connected to the perpendicular slider (291) and which drives the perpendicular slider (291) to move horizontally. The horizontal slider (292) is connected to a transmission support (201) in a manner of rotating around an axis Z, and the perpendicular slider (291) is connected to the horizontal slider in a manner of rotating around an axis X. According to the device, the welding gun is driven to move horizontally and perpendicularly through the corresponded movements of the perpendicular slider and horizontal slider and is driven to rotate through the rotation of the perpendicular slider corresponding to the horizontal slider and the rotation of the horizontal slider corresponding to a frame, the welding gun can be adjusted in multiple directions, the fast and accurate adjusting requirements by the welding gun in different welding positions are met, and the device is simple in structure and convenient to adjust.