Small energy-saving and efficient domestic garbage incinerating treatment system

The invention relates to a small energy-saving and efficient domestic garbage incinerating treatment system. The small energy-saving and efficient domestic garbage incinerating treatment system comprises a before-incineration treatment system, an incinerating system, a smoke gas waste heat utilizing system and a smoke gas treatment system. The smoke gas treatment system comprises a first gas-liquid exchanging device, a first induced draft fan, a waste sodium carbonate utilizing tower, a semi-drying-method extracting tower, a second gas-liquid exchanging device, a cooling water tower, a cyclonedust collector, a bag-type dust collector, a second induced draft fan and a chimney. According to the small energy-saving and efficient domestic garbage incinerating treatment system, the before-incineration treatment system, an incinerating furnace inner structure and the smoke gas treatment system are optimized, convenience of garbage crushing and dewatering is comprehensively considered, the airtightness of an inciner