The invention discloses a damping and noise reduction structure of a cab and a mining dump truck and belongs to the field of machine manufacturing. The cab comprises a frame, a window, a truck door 7 and a cover 1, the cover 1, the window and the truck door 7 are arranged on the frame, and the cover 1 is made of sheet metal 1.2-2.0mm in thickness. The damping and noise reduction structure is characterized by further comprising a damping layer 2, the damping layer 2 is made by uniformly arranging damping materials on the cover 1 on the inner surface of the cab and the truck door 7 and is 2.0-4.0mm in thickness. Vibration and noise of the cab are comprehensively reduced by comprehensive means, technological means translation is good, the damping and noise reduction structure can be quickly popularized in the like products and is remarkable in effect.