The invention discloses an integrated building wall structure in the wall field of the building. The integrated building wall structure comprises standing posts, a cross beam, and a wall body. The bottom end of the wall body is connected to the cross beam; and the side ends of the wall body are connected to the standing posts. The wall body consists of a plurality of wallboards including frames and heat-preservation and insulation layers; each frame includes two panels and two side boards; each side board is fixed with two panels; and heat-preservation and insulation cavities and mounting grooves are encircled by the panels and the side boards. The mounting grooves formed in the each two adjacent wallboards are opposite to each other; a positioning bar is arranged between each two adjacent wallboards; windproof bars are arranged between the positioning bars and the side boards; and a T-shaped sealing bar is arranged at a joint between each two adjacent wallboards. According to the scheme, the integrated building wall structure has advantages of convenient installation and dismounting, low building cost, wide application range, stable and reliable structure, good waterproof and windproof performances, and good heat-preservation and insulation effect. Therefore, problems that the consumed time and labor costs are high, the heavy wall can not be moved conveniently, the windproof and moisture-proof performances are poor, and the heat-preservation and insulation capability is poor according to the existing wall body building process can be solved effectively.