PROBLEM TO BE SOLVED: To provide a liquid atomization device capable of improving crushing efficiency of water droplets by allowing water attached to a crushing wall for crushing the water droplets to drip efficiently to a water storage part.SOLUTION: A liquid atomization device comprises: a fan motor for rotationally driving a fan a primary heat exchanger for heating and blowing air sucked by the fan a humidification unit for crushing water into fine water particles on the basis of an operation of a crushing motor, and humidifying the hot air blown from the primary heat exchanger by the water particles. A humidification unit 12 comprises: a lifting pipe 18 for winding up water from a water storage part by rotating on the basis of the operation of the crushing motor a centrifugal crushing disk for scattering the water wound up by the lifting pipe in a rotation direction of the lifting pipe and a crushing wall 20 for colliding the water droplets scattered from the centrifugal crushing disk and crushing them. At a side surface of the crushing wall 20, a plurality of crushing frames 26 are provided for inhibiting the movement of water in the left/right direction of the side surface.
