A workshop applicable for assembling a composite apparatus comprises a workshop body, an indoor purification system and a rotation door, wherein the indoor purification system is arranged on the workshop body, the rotation door is arranged at one side of the workshop body, a cleaning part is arranged in the rotation door and comprises a dust removal system and a dust collection system, the dust removal system is arranged at the top of the rotation door, and the dust collection system is arranged at the bottom of the rotary door. The workshop is simple in structure and is convenient to operate; and compared with the traditional workshop, the workshop has the advantages that a cleaning room is unnecessarily and independently arranged, and the problems of complexity in the traditional cleaning step, cleaning unthoroughness and the like are solved.