Abstract: A new energy -saving composite wall structure is a new residential building structure characterized by low weight,energy-saving and good aseismic performance, which is mainly constructed with pre -cast multi-ribbed composite slabs,concealed frame and floor by means of assembling and casting.On the basis of previous study, the load -bearingcharacteristics of the wall are analyzed; heat transfer and thermal-insulating mechanism of the exterior slab are studied; localthermal bridge disposal and integral thermal -insulating disposal of the exterior slab are put forward;and finally, thehorizontal and vertical links of the slabs in the structure are discussed.