The invention relates to a small floor grout spreading all-in-one machine. The small floor grout spreading all-in-one machine comprises a track type chassis, a front vehicle frame, a round through hole, a hopper, a feeding plate, an extrusion motor fixing seat, a conveying barrel, a bearing with a seat, an extrusion motor, an extrusion auger, a stirring auger, a driven belt wheel, a belt, a driving belt wheel, a motor, an extruder, a taped through hole, a connecting rod, a roller barrel, a grout box, a stirring motor, a stirrer, a grout outlet, a grout conveying pipe, a grout conveying pipe control valve, a grout spraying opening, a water tank, a water outlet, a water conveying pipe, a water conveying pipe control valve, a water spraying opening and a vibration motor. The small floor grout spreading all-in-one machine is reliable in structure, capable of relieving labor intensity of constructors and meanwhile greatly improving the floor grout spreading efficiency and quality, and beneficial to improving the mechanical level of floor grout spreading operation, and realizes rapid and efficient conduction of floor grout spreading operation.