The laboratory clean small gantry is a small crane that can move back and forth in the purification workshop. Clean mobile small gantry generally bears lighter weight, more than 5000kg in laboratories, operating rooms, electronic workshops, assembly workshops and other purification engineering workshops. The biggest advantage of the clean mobile gantry is that it can be moved in all directions, can be quickly disassembled and installed, and has a small footprint. It can be transferred to another site for installation and use with a miniature car. The width and height can be adjusted in stages, the steel frame design is reasonable, the aluminum alloy material is used, and the dust-free gourd is configured, which will not cause pollution in the dust-free workshop.