The utility model discloses an improve mechanism of a wind -warm syndrome of boiler pulverizing system utilizes boiler superheated steam further to heat the wind air one time, improves one time the air drying ability. On low temperature superheater export collection case is connected to the pipeline of next stage over heater collection case, increase vapour the gas heat exchanger comes from wind of the part or whole of air heater export through steam heating. The utility model relates to a mechanism can independently control the wind -warm syndrome one time, requirement that satisfied drying was exerted oneself, the operation safe and reliable of powder process system, through improving the wind -warm syndrome one time, can solve one well, the difficult problem of overgrate air serious disproportion, make one, the overgrate air proportion keeps at equitable design scope, reduce one, the unreasonable interference to the burning tissue of overgrate air distribution, make that the furnace distribution of temperature is unreasonable, the super temperature of furnace export flue gas, the super high difficult problem of exhaust gas temperature obtain the solution simultaneously.