The invention relates to the field of portable houses, in particular to a novel house building structure. According to the technical scheme, the novel house building structure is characterized in thatthe novel house building structure comprises a base, wall bodies detachably connected to the base and a roof detachably connected to the tops of the wall bodies; an indoor space is defined by the base, the wall bodies and the roof, heat insulation layers are arranged on the sides, close to the indoor space, of the wall bodies, and first heat dissipation channels are formed in the sides, close tooutdoor space, of the wall bodies; the first heat dissipation channels are vertically arranged in the height direction of the wall bodies, first air inlets communicated with the bottom ends of the first heat dissipation channels are formed in the bottoms of the wall bodies, first air outlets communicated with the top ends of the first heat dissipation channels are formed in the tops of the wall bodies, a heat insulation cavity is formed in the roof, and the first air outlets are communicated with the heat insulation cavity; and a second air outlet communicating with the heat insulation cavityis formed in top of roof. The novel house building structure has the advantages that the heat insulation and heat preservation effects of the portable houses are improved, then the energy consumptionof indoor refrigeration electric appliances is reduced, and the novel house building structure is energy-saving and environment-friendly.