The invention belongs to a heat insulation structure prefabricated integrated assembly wall panel and an overall building forming method. A panel body is made by injecting a heat insulation slurry formed by stirring cement, polystyrene particles, additives and water into a mold, and demolding after drying, and slab joint connecting grooves are respectively formed in the peripheries of two side planes of the panel body; ring beam connecting grooves are formed in the upper end surface of the panel body, and longitudinal through holes in parallel with the slab joint connecting grooves are longitudinally formed in the panel body at intervals; transverse through holes are transversely formed in the panel body at intervals, and are communicated with the horizontal through holes, and a reserved window frame opening and a reserved door frame opening which are sunken into the panel body are respectively formed in one side of a plurality of panel bodies. Prefabricated pieces are quickly assembled into a house by the heat insulation structure prefabricated integrated assembly wall panel provided by the invention. The heat insulation structure prefabricated integrated assembly wall panel has the advantages of fewer components, unified production standards, short construction period, light weight, raw material saving, high strength, low cost, convenience in transport and use, good heat insulation and noise isolation, impact resistance, effective shock resistance and convenience in installation.