The invention discloses a PVC foaming plastic tray for conveying heavy objects. The PVC foaming plastic tray includes supporting girders and multiple transverse laying plates; the cross section of each supporting girder is in a shape like the character H, fork holes are formed in the end face of each supporting girder, the transverse laying plates are connected to the tops and bottoms of the supporting girders through screws, the number of the transverse laying plates on the tops is greater than that of the transverse laying plates at the bottoms, and the cross section of each transverse laying plate is of an arched structure; a left through hole and a right through hole are formed in the end face of each transverse laying plate, and all the transverse laying plates are connected to the supporting girders through screws. On the one hand, since bubbles are formed in a foaming material, an anti-drop and shockproof function can be achieved; on the other hand, the foaming material is lightweight, the weight of the whole tray can be reduced, and correspondingly the cost and the work intensity of workers are reduced. Moreover, through the reasonable structural design, use demands can bemet, and the problem that the strength and tenacity of existing foaming materials do not meet use requirements is avoided.