The invention discloses an intelligent household floor sweeper capable of achieving narrow gap cleaning. The intelligent household floor sweeper includes a housing, wherein universal wheels are arranged on a bottom surface of the housing, a radar sensor is arranged on a top surface of the housing, and a groove for holding a mopping mechanism is formed in one side of a tail end of the bottom surface of the housing; a sweeping mechanism which includes edge brushes, a main brush, dust collection devices, and a dust box; an intelligent control system which includes a controller, and a motor, a mapgeneration module, and an analysis module which are connected to the controller, wherein the map generation module can generate a sweeping map, the analysis module can ensure full coverage of a sweeping region and avoid sweeping omitting; an assist sweeping system which includes a telescopic rod, a laser distance sensor and a suction head; and a charging battery. Flexible use of a mop cloth of the floor sweeper can be achieved, the sweeping space is full covered through control of the intelligent system, sweeping omitting can be effectively avoided, and a sweeping effect can be improved; andthe floor sweeper can clean narrow regions where the conventional floor sweeper cannot enter, and can conveniently and thoroughly clean a household environment.