Preparation method of foamed and printed composite fabric

The invention discloses a preparation method of a foaming and printing composite fabric, which comprises the following steps: firstly adding a hot melt adhesive layer on a substrate layer, and then adding a foaming layer on the basis of the hot melt adhesive layer to form a substrate layer-hot melt adhesive layer-foaming layer structure; the hot melt adhesive layer enables the foaming color paste to form a foaming layer to be bonded with the substrate layer, and meanwhile can improve the bonding degree of the substrate layer, so that the substrate layer is not prone to deformation in the foaming process, and the situation that the foaming part of the substrate layer protrudes, and consequently the substrate layer is wrinkled is avoided; in addition, the hot melt adhesive layer has the effects of heat insulation and heat absorption, the foaming effect of the foaming color paste at different parts is influenced by utilizing the characteristic of non-uniform heat absorption of the hot melt adhesive, a collapsibl