The invention provides a warehousing ventilation system, comprising a telescopic duct, electric lift bars, connection racks, rotary shafts, lift posts, a flow outgoing head, a flow collector hood, airbarrel I, an outflow fan, air barrel II, an inflow fan and absorbing sponge. The telescopic tube is connected to the lower end face of the air barrel II, the lower ends of electric lift bars are connected with the connection racks, the rotary shafts are fitted in the connection racks, the upper ends of the lift posts are fixed to the circular lateral sides of the rotary shafts, the flow outgoinghead is connected to the lower ends of the lift posts, the flow collector hood is mounted on the lower end face of the flow outgoing head, and accordingly, the functionality of the system is improved;the outflow fan is fitted in the air barrel I, a heating resistance wire is fitted in the air barrel II, the inflow fan is fitted in the air barrel II above the heating resistance wire, the absorbingsponge is fitted in the air barrel II above the inflow fan, and accordingly, installation of the system is facilitated. The warehousing ventilation system is convenient to use, good in functionalityand high in reliability.