The invention discloses an agricultural continuous water separation device for rice seeds. The agricultural continuous water separation device comprises a placing groove, water separation tanks and awater separation groove, wherein a first partition and a second partition are arranged in the placing groove, a rotating sleeve which is connected with a support rotating shaft through a spline is arranged on the outer side of the support rotating shaft, the rotating sleeve is rotatably connected to the bottom end of a driving groove through a bearing, a top plate is fixed to the top end of the support rotating shaft, the two water separation tanks are respectively arranged on both ends of the lower end surface of the top plate, mixing shafts are arranged in the water separation tanks, mixingrods are arranged on the lower ends of the mixing shafts, permeable nets are arranged on the lower ends of the water separation tanks, a water pump is arranged in a water storage tank, the water pumpis connected with the bottoms of the water separation tanks through water guide tubes, and slag collecting screen plates are arranged between the side walls of the water separation tanks and the waterstorage tank. The agricultural continuous water separation device has the advantages of simple structure, high water separation efficiency, good water separation effect, simplicity and convenience inoperation and high practicability, and water resources can be recycled.