The invention belongs to a low-cost high-efficiency multiple-effect coupled atomization evaporator which consists of a tower drum, an atomizing device, a waste liquor pool, a crystalline particle collection device, a crystalline particle collection bin, a thermo-fluid inlet pipeline and an evaporation fluid outlet pipeline, wherein the lower bottom of the tower drum is provided with an air inlet regulation device; the atomizing device is positioned inside the tower drum; the waste liquor pool is positioned below the tower drum; the crystalline particle collection device is used for collecting the atomized and evaporated crystalline particles; the crystalline particle collection bin is adjacent to the waste liquid pool; and the thermo-fluid inlet pipeline and the evaporation fluid outlet pipeline are used for accelerated evaporation. According to the device, the functions of atomization, evaporation, crystallization and collection of crystalline particles are integrated into a whole, the multiple evaporation effects of evaporating and atomizing the fluid together by using wind power and thermo-fluid are combined, the time needed by natural wind evaporation is effectively shortened, and the wind and thermal evaporation effects can be freely regulated, so that the atomization evaporator can safely and efficiently operate all the year round, and huge floor space of the waste liquor pool or a natural evaporation pond is greatly reduced. According to the equipment, the natural wind power and various waste heat fluid can be used for auxiliary evaporation, any intermediate dosing treatment process is not needed, the investment is saved, and the operating cost is low.