This utility model relates to the technical field of integrated sampling devices, and proposes an integrated air particulate matter sampling device, including a housing and casters. Four casters are mounted on the lower side of the housing. The device also includes electric push rods, a moving plate, a support frame, a cylinder, a partition, a support column, a particulate sampler, a buffer disc, and a buffer mechanism. Two electric push rods are installed on the inner bottom wall of the housing, connected to an external power source via cables. The two electric push rods are symmetrically arranged. A moving plate is installed at the telescopic end of each electric push rod, moving synchronously with the telescopic end of the electric push rod. The support frame is installed on the upper side of the moving plate, and a cylinder is installed on the upper side of the support frame. A switch valve is connected to the outer side of the cylinder. This technical solution addresses the problems of existing integrated sampling devices being inconvenient for personnel to carry and easily damaged by bumps during movement.