A low pressure fogging device includes a fogging device body having a hose coupling tube formed unitarily with the lower side thereof, a screw portion formed on the upper side thereof, and a fluid flow-inducing member seating plate formed on top of the screw portion; a fluid flow-inducing member having induction wings seated on top of the fluid flow-inducing member seating plate; a nozzle body having a fitting hole open downwardly therefrom to allow the fluid flow-inducing member seating plate and the fluid flow-inducing member to be fitted thereto; and a push-up nut having a pressuring ring formed at the center thereof to be locked onto a locking projection formed from an outer lower end periphery of the nozzle body and a screw groove formed at the inner periphery thereof to be fastened to a screw portion formed on the fogging device body.