Cushioning structure of color printing carton

The utility model discloses a cushioning structure of a color printing carton, and relates to the related technical field of packaging products. The supporting frame comprises four right-angle supporting pieces, reinforcing transverse strips, an inverted-U-shaped inserting piece, a supporting panel and a bottom plate. The reinforcing transverse strips arranged at equal intervals are fixed to the opposite side edges of every two adjacent right-angle supporting pieces. An inverted-U-shaped inserting piece is vertically inserted into the outer side of the reinforcing transverse strip, and external sponge plates are fixed to the two sides of the exterior of the inverted-U-shaped inserting piece; the inner sides of all the inverted-U-shaped inserting pieces are jointly connected with a supporting face plate in a clamped mode, the inner bottom ends of the four right-angle supporting pieces are jointly connected with a bottom plate in a lap joint mode, and a foam pad is bonded to the bottom of the bottom plate. Acco