An automatic agricultural spraying device, comprising a spraying unit, a first transmission unit, and a second transmission unit. The spraying unit includes a base and a nozzle installed on the base. The first transmission unit includes A first base, and a first transmission assembly fixed on the first base and controlled to drive the base to rotate around a first direction as an axis； the second transmission unit includes a second base, and a fixed A second transmission assembly that is provided on the second base and controlled to drive the first base to rotate around a second direction as an axis. The first transmission assembly and the second transmission assembly drive the base and the first base, respectively A base rotates, so that the nozzle installed on the base can rotate around the first direction and the second direction at the same time to perform large-scale spraying operations.一種農業自動噴灑裝置，包含一噴灑單元、一第一傳動單元，及一第二傳動單元，該噴灑單元包括一基座，及一裝設於該基座上的噴嘴，該第一傳動單元包括一第一底座，及一固設於該第一底座且被控制地驅動該基座繞一第一方向為軸線轉動的第一傳動組件，該第二傳動單元包括一第二底座，及一固設於該第二底座且被控制地驅動該第一底座繞一第二方向為軸線轉動的第二傳動組件，藉由該第一傳動組件與該第二傳動組件分別驅動該基座與該第一底座轉動，使裝設於該基座上的該噴嘴能同時繞該第一方向及該第二方向轉動來進行大範圍的噴灑作業。
