The invention relates to the field of automobile parts, in particular to a lightweight integrated trailer valve bracket assembly. The lightweight integrated trailer valve bracket assembly comprises abracket body, a handshake valve and an electrical plug socket, wherein the outline framework of the bracket body is in a triangular prism shape, the bracket body comprises a left side surface, a rightside surface, an operation panel and a supporting panel, a first flanging hanger is formed by extending outwards from the bottom edge of the left side surface, a second flanging hanger is formed by extending outwards from the bottom edge of the right side surface, and the first flanging hanger and the second flanging hanger are both fixed on a trailer working table board; an electrical interfaceis formed in the operation panel; and a first brake air pipe passage penetrating through the supporting panel and the left side surface is on the left side of the supporting panel, and a second brakeair pipe passage penetrating through the supporting panel and the right side surface is on the right side of the supporting panel. The lightweight integrated trailer valve bracket assembly is directlymounted on the trailer working table board, so that convenience in operation is improved.