The present invention relates to an agricultural pesticide dispenser, and more specifically, comprising: a cylinder which is installed inside an agricultural pesticide barrel, has a bottom end to communicate with the agricultural pesticide barrel, is installed with an open-shut valve on the bottom end and center part of an inhalation hole to inhale pesticides in the agricultural pesticide barrel, and has an opened top end a piston which enters inside the cylinder through the opened part of the cylinder, mounted with a piston ring on a bottom end, installed with double open-shut valves on an insulation hole and a center hole, formed with an agricultural condensation room on the top part of the main body, and formed with a discharge hole on a top end an operation lever on which a support unit is formed on the bottom end and one side of the agricultural pesticide barrel and connected to an axis rod, and a strap is formed on the top end a piston rod installed and a rod connection hole formed on each of the top end part of the piston a motor case attached to the bottom end part of the agricultural pesticide barrel by up-and-down operation of the piston cooperated with the operation lever a motor installed inside the motor case and operated by a battery a motor pump operated by the motor an agricultural pesticide connection hose connected between the agricultural pesticide barrel and an access hole on which a combination room is formed at the discharge hole of the motor pump to be connected with an agricultural pesticide dispenser and which is formed in the lateral direction of the combination room formed to be connected to the end of an agricultural pesticide discharge hole formed on a top discharge hole in an agricultural pesticide extrusion room of the piston, thereby collecting agricultural pesticides discharged from the agricultural pesticide extrusion room of the piston and discharged agricultural pesticides discharged from the discharge hole of the motor pump suppl
