The invention discloses an agricultural seed screening device convenient for loading and discharging. The device comprises a main body, a screening chamber, an air blower, a conveying belt and a collecting tank; a feed port is formed in the left upper angle of the main body; a front plate is arranged on the left side of the feed port; a fixed plate is mounted at the left lower angle of the main body; the screening chamber is formed under the feed port; a vibration screen plate is arranged at the middle part of the screening chamber; a top plate is connected under the vibration screen plate; afixed disc is arranged on the outer side of the rotating shaft; the air blower is arranged on the right side of the screening chamber; the conveying belt is arranged on the right side of a rolling screen plate; a discharge port is formed in the bottom end of a stirring device; and a collecting bag is fixed at the top end of a clamping device. The agricultural seed screening device is convenient for loading and discharging, can effectively screen impurity particles in seeds, can directly and quickly load medicines on the seeds, and facilitates quick implementation of later storage work of the seeds.