The invention discloses a conveniently-cleaning household dust collecting device. The conveniently-cleaning household dust collecting device comprises a support base, universal wheels, a box, a movable door, a handle, an air inlet pipe, a first motor, a first rotating shaft, a fan, a dust collecting filter bag, a dust collecting box, an air anion generator, a filter mesh, a first air outlet pipe,a second air outlet pipe, a sliding groove, a spring, a switch, a support bar and an alarm unit. According to the conveniently-cleaning household dust collecting device, the first motor works to drivethe fan to rotate to collect dust on the ground into the dust collecting filter bag; dust-cleaned air is exhausted via the first air outlet pipe and the second air outlet pipe; the inside of the first air outlet pipe is provided with the air anion generator, so that the exhausted air contains oxygen anions to improve indoor air quality; when the collected dust of the dust collecting filter bag reaches a certain degree, the support rod can extrude the switch by gravity so that the alarm unit can issue an alarm to remind a user of cleaning the dust collecting filter bag, and further, the conveniently-cleaning household dust collecting device can be high in scientific intelligence and reduce the application difficulty for the user.