The invention discloses a construction method for building house with the insulating bricks, the building house includes an external wall built with insulating bricks and an internal wall, a floor slab, a door and window and a collar beam that are connected with the external wall; a concrete constitution post is arranged between the external wall and internal wall, a tie column node is arranged on the external wall, the concrete constitution post extends toward the internal wall and forms an extension section, then insulating layers are respectively arranged at the following points: the two sides of the extension section, the horse-tooth trough near the inner side of the external wall, the inner side of the through section of the structural node, the space between the end of the floor slab and the external wall, the inner side wall of the external wall near the door and window and the inner side of the collar tie beam. The invention solves the problems of the traditional internal heat-insulating technology that a thermal bridge is formed at the node, which causes the condensation of moisture, the gather of mold, accumulation of salt in the surface, peeling and so on at the wall corners and the corner between the floor, the roof and the wall. The construction method can greatly reduce the construction difficulty and the building cost.