The utility model discloses a pesticide spraying device for agricultural planting. The device comprises a body, a water tank is fixedly connected to the left side of the top of the body, a motor box is fixedly connected to the middle end of the top of the water tank, a motor is fixedly installed in an inner cavity of the motor box, a rotating rod is fixedly connected to an output shaft of the motor, and second stirring rods are fixedly connected to the left side and the right side of the rotating rod. According to the utility model, the output shaft of the motor is fixedly connected with the rotating rod; second stirring rods are fixedly connected to the left side and the right side of the rotating rod; the tail end of the second stirring rod is fixedly connected with a second stirring blade; first stirring rods are fixedly connected to the lower ends of the left side and the right side of a rotating rod, first stirring blades are fixedly connected to the tail ends of the first stirring rods, the effect of bottom mixing is achieved, liquid medicine is prevented from precipitating, and the effect of rapid medicine spraying is achieved through cooperation of a spray head, a drainagepipe, a water conveying pipe and a water pump.