The invention relates to an energy-saving and emission-reducing garbage incinerator with a washing and drying structure. The energy-saving and emission-reducing garbage incinerator comprises a body, acleaning pipe, drying fans and an alkaline reagent box. Lifting air rods are mounted above the body, and the upper portions of the lifting air rods are connected with a water tank. The body and the lifting air rods are movably connected, and the lifting air rods and the water tank are in screw connection. The cleaning pipe is fixed to the center position of the bottom of the water tank, and an electromotor is arranged on the left side of the bottom of the cleaning pipe. The cleaning pipe and the electromotor are in screw connection. A spraying head is connected with the lower portion of the leaning pipe, a transmission gear rack is arranged at the top of the spraying head, and the cleaning pipe and the spraying head are movably connected. The energy-saving and emission-reducing garbage incinerator with the washing and drying structure has the beneficial effects that the transmission gear rack and the electromotor are arranged, water can be sprayed by 360 degrees along with rotation ofthe spraying head, and therefore the device cleaning efficiency is improved.