The invention relates to a recycle thermal-driving solution fan, which uses reflux air to vaporize and cool. Wherein, said invention comprises gas-liquid direct-contact modules (A-G), sheet heat exchanger, solution self-circulate pump, fan valve, and water pump; the upper channel is formed by the modules (A, B, C, D); the lower channel is formed the modules (E, F, G); the upper modules (B, C, D) is relative to the lower layer modules (E, F, G) to form three-stage heat recycles; each stage of upper and lower modules are connected by the sheet heat exchanger; the solution is cooled to be sprayed in the lower modules (E, F, G), to directly contact the air to dehumidify the air; and the dense solution enters into the lower modules (E, F, G); the upper module (A) contains the vaporizing cooling process between air and cold water, to generate cold water into the lower air cooler to reduce the temperature of air.