The invention discloses a simple and spiral metering device, and belongs to the technical field of intelligent electromachinery. A feeding pipeline is fixedly arranged at an upper side of a rack by afixed plate, a right side of the feeding pipeline is connected with a discharging pipeline, a lower side of the discharging pipeline is connected with a first transmission machine body by a first connector, a rotation shaft is fixedly arranged in the first transmission machine body, rotation blades are arranged on the rotation shaft, a right end of the rotation shaft is connected with a driving motor, a weighing scale is arranged on the first transmission machine body, a pressure sensor is arranged on the weighing scale and is connected with a digital computer, a weighing scale bottom plate isarranged at the bottom of the first transmission machine body, and a lower side of the first transmission machine body is connected with a second transmission machine body by a second connector. Thesimple and spiral metering device is simple in structure and is convenient to control, and the rotation shafts and the rotation blades are arranged in both of the first transmission machine body and the second transmission machine body; and a spiral transmission mechanism is used, the material can be stably transmitted, the simple and spiral metering device is more safe and reliable to use, and the working efficiency is greatly improved.