A multifunctional pet house includes a house body having an electromechanical room and a pet room, the electromechanical room has a water collecting tank, an electric pump and a bottom rotating jet rod, above the pet room is provided a top rotating jet rod, after raising the pressure and speed of water in the water collection tank through the electric pump, nozzles of the top and bottom rotating jet rods spray water on the pet room, so as to remove the dirt attached to the surface of the pet room. Then, the sewage finally flows into the water collecting tank for recycling, after a certain period of continuous cleaning, the sewage in the water collecting tank is discharged from the pet room, then repeat the same cleaning process twice to thoroughly clean the pet room. Moreover, with the ventilator and warm-keeping device, it can provide good living environment for pets.