The invention relates to the technical field of building construction, in particular to a construction method used during position overlapping of structural columns and inner supporting lattice columns. The construction method comprises the following steps that the lattice columns are embedded in a ground preset position to be subjected to foundation pit excavation; earth excavation is performed until the upper end faces of the lattice columns are reached; supporting beams are arranged on the upper end faces of the lattice columns; then earth excavation is performed; bottom plate constructionis carried out on the pit bottom of a foundation pit; a wall body and the structural columns which are not overlapped with the positions of the lattice columns are constructed on a bottom plate; auxiliary supporting columns are arranged; upper-layer beam plate construction is carried out at the upper ends of the wall body, the structural columns and the auxiliary supporting columns, holes are reserved in the positions, where the structural columns overlap the lattice columns, of upper-layer beam plates; all the lattice columns and the supporting beams are removed; and structural column construction is carried out at the positions where the structural columns overlap the lattice columns, and the reserved holes of the upper-layer beam plates are repaired. According to the construction method, the problem that the size of the structural columns is large after the lattice columns and the structural columns are combined, so that the underground space of a basement is reduced is solved.