In view of the problem that the control precision and the even fertilizer uniformity of the mechanical fertilizer applicator are poor at present, a vertical spiral quantitative fertilizer applicator is designed. The fertilizing machine is composed of a vertical spiral fertilizer device, a walking detection device and a control system. The control system comprises a hardware circuit and a software program. The walking detection device detects a walking signal of the fertilizer spreader. The control system, according to the running speed of the walking wheel, Control the speed of the fertilizer motor, so as to achieve the purpose of quantitative fertilization; installed in the vertical spiral and fertilizer between the drain port baffle to avoid leakage of fertilizers when not fertilizers. The results showed that the amount of fertilizer applied to the vertical screw-type fertilizer applicator was independent of the walking speed, which was only dependent on the amount of fertilizer applied. The control error of fertilizer amount was within 4% and the control precision of fertilizer amount was high. The coefficient of variation More than 3%, good fertilizer uniformity. The fertilizer machine for the quantitative fertilizer designed to provide a reference to improve the mechanical and electrical machinery integration level.