A kind of agricultural atomizer, the power device of what charging ladle lower section is set comprising a charging ladle, one, one sets drawing device between what charging ladle and power device, an and water-tight device, the charging ladle includes one setting the staving of neck at what inlet with an inlet and one and one capable of closing the lid of the inlet to set the what neck. The water-tight device includes an ontology, one extends from the gear eaves and two of the ontology one end and inclined decline from the side eaves of the inclined decline in two opposite side of ontology, which stretches the opening set with the neck for charging ladle with one. Thereby the power device to what position below water-tight device can provide covering effect, so that excessive flushing liquor will not infilter power device when injection flushing liquor, and make power device be easy to start and be not easy to stop working, service life thus can extend.一種農用噴霧器，包含一裝料桶、一設於裝料桶下方之動力裝置、一設於裝料桶與動力裝置之間的汲取裝置，以及一防水裝置，該裝料桶包括一具有一注入口與一設於注入口處之頸部的桶體，以及一用以設於該頸部而能封閉該注入口之蓋體。該防水裝置包括一本體、一延伸自該本體一端且呈傾斜下降之擋簷，以及二自本體二相對側呈傾斜下降之側簷，該本體具有一用以供裝料桶之頸部伸置的開口。藉此對於位在防水裝置下方之動力裝置能提供遮蓋作用，使得注入噴灑液時外溢的噴灑液不會滲進動力裝置，而使動力裝置容易發動且不易熄火，使用壽命因而可延長。
