Problem to be solved: to provide an unmanned aerial vehicle capable of reliably spreading the sprayed chemicals (liquid) to the crops while suppressing wasteful spraying of chemicals (liquids).Liquid storage container 3 andA forward side spreading system that communicates from the liquid reservoir 3 to the outside of the forward side andA backward side spreading system communicating from the liquid reservoir 3 to the reverse side outsideTwo forward rotors located on the forward sideTwo backward side rotors located on the backward sideAndLiquid in liquid reservoir 3A quad copter type unmanned aerial vehicle 1 having a liquid spreading mechanism 4 capable of arbitrarily switching between the forward side scattering system and the backward side scattering system and capable of being sprayed from either or both sides.Diagram【課題】薬品（液体）の無駄な散布を抑制しつつ、散布した薬品（液体）を確実にムラなく農作物に到達させることが可能な無人飛行体を提供する。【解決手段】液体貯留容器３と、液体貯留容器３から前進側外部に連通する前進側散布系統と、液体貯留容器３から後進側外部に連通する後進側散布系統と、前進側に位置する二つの前進側ロータと、後進側に位置する二つの後進側ロータと、を具備し、液体貯留容器３内の液体を、前進側散布系統と後進側散布系統とを任意に切り替えてどちらか一方又は双方から外部に散布可能な液体散布機構４を有するクアッドコプタ型の無人飛行体１。【選択図】図１
