The invention discloses a flat plate lighting light guide structure which comprises a flat plate type lighting cover, a light guide pipe, an annular base and the ground. The ground comprises a bottom layer and a surface layer, the bottom layer of the ground comprises a mounting protruded table, mounting holes of the light guide pipe are formed in the mounting protruded table, the upper portion of the annular base comprises a bearing hole of the flat plate type lighting cover, the flat plate type lighting cover is installed in the lighting cover bearing hole, the peripheral part of the flat plate type lighting cover is sealed with the lighting cover bearing hole, a pavement surface layer fills the peripheries of both the mounting protruded table and the annular base, the top surface of the pavement surface layer is flush with the top surface of the flat plate type lighting cover, and the top of the light guide pipe is fixed in an inner hole below the lighting cover bearing hole of the annular base. The flat plate lighting light guide structure can be used on special occasions of corridors, squares, pavements and floors with the requirements for planes, not only can indoor lighting be achieved, but also an external space is saved, a passing function of roads cannot be hindered, and the flat plate lighting light guide structure is simple and compact in structure, low in manufacturing cost and convenient to construct and install.