The utility model provides a mining dump truck driver's cabin, includes driver's cabin main part, interior trim assembly, electrical apparatus assembly, bottom plate welding piece, covering, instrument desk subassembly, front side bounding wall, and bottom plate welding piece includes upper plate, hypoplastron, and the upper plate is located the top of hypoplastron, forms the cavity between upperplate, hypoplastron and the driver's cabin lateral wall, and the cavity intussuseption is filled with expanded material, the plaque both sides of interior trim assembly below are connected with the medial surface of front side bounding wall, and front side bounding wall lateral wall, covering inside wall, upper plate, interior trim assembly enclose into the cavity, are filled with expanded material in this cavity intussuseption. Its advantage has reduced inside vibration of driver's cabin and noise, and simple structure, and the cost is little, and safe and reliable had both improved mining dump truck's operator comfort, can protect electrical component's working life again, and upper bottom plate thickness can reduce, and the driver's cabin can necessarily be subtracted heavyly, simple structure need not to increase moulds of industrial equipment input, and technology realizes easily.