The invention discloses a discharge hopper with a metering function. The discharge hopper comprises a hopper shell, a left baffle plate, a right baffle plate, a pressure sensor, a telescopic rod, a controller and a dust suction fan, wherein the hopper shell is arranged at the lower part of a material conveying machine body, clamping buckles are installed on the upper portions of the left side andthe right side of the hopper shell, the clamping buckles are clamped on a clamping groove base arranged on the material conveying machine body, a temporary storage tank is formed inside the hopper shell, the left baffle plate is arranged at the lower part of the left side of the temporary storage tank, and the right baffle plate is installed on the lower portion of the right side of the temporarystorage tank. According to the discharging hopper with a metering function, the hopper shell, the left baffle plate, the right baffle plate, the pressure sensor, the telescopic rod, the controller andthe dust suction fan are arranged, the problems that manual weighing is time-consuming and labor-consuming, the accuracy is low, and the quality of the camellia oil is reduced due to the fact that dust is doped in the camellia seeds are solved.