The invention provides a novel composite wall body composition and relates to the field of building construction mounting. An interlayer structure is adopted, rapid splicing of a composite wall body is achieved, a composite wall body material comprises an aluminum alloy sectional material, cement fiber plates, countersunk head flat machine screws, waterproof glue, ceramic tile glue, ceramic tiles, aluminum alloy thin plates, aluminum honeycomb cores, self-tapping screws and epoxy resin glue. According to the composite wall body composition, screw holes are punched in one material firstly and twisted together, then the glue meeting the requirement is smeared, then another material is placed to enable the upper material and the lower material to be seamlessly attached, and thus sealing performance of wall body splicing is ensured. The selected materials of the composite wall body material all have the waterproof, fireproof, small-weight, high-rigidity and long-service-life characteristics, meanwhile are convenient to transport and can be completed in a factory completely according to the measured sizes in a construction site, work division production is achieved, the rapid effect is achieved, the materials can be spliced and mounted when being transported to the site, time is saved, noise is reduced, the site is protected, and the environment-friendly and energy-saving effects are achieved.