The invention discloses a rice seed soaking device for agricultural planting. The rice seed soaking device comprises a box body, a fixing hole is formed in the outer wall of the top of the box body, a feeding hopper is inserted into the fixing hole, a fixing plate is arranged on the outer wall of one side of the box body, a supporting rod is arranged on the outer wall of the top of the fixing plate, a supporting plate is arranged on the outer wall of one end of the supporting rod, and a first motor is arranged on the outer wall of one side of the supporting plate. After rice seeds fall into the bottom of the box body, people start a second motor, the second motor drives a rotating rod to rotate, a material turning plate and a stirring rod can be driven to rotate together along with rotation of the rotating rod, the material turning plate can stir up the rice seeds and pesticide deposited at the bottom of the box body, so that the rice seeds and the pesticide can be fully mixed, meanwhile, steel needles are connected to the outer walls of the two sides of the stirring rod through hinges, the rice seeds which are adhered together can be separated, so that wizened rice seeds can float on the water surface and flow out of through grooves, and the seed soaking requirement of people is met.