The invention discloses a fertilizing device for agricultural planting. The fertilizing device comprises a base, wherein supporting legs are arranged at the four corners of the bottom of the base, universal wheels are arranged at the bottoms of the four supporting legs, a storage box is arranged at the top of the base, a partition plate is arranged at the bottom of the circumferential inner wall of the storage box, a transition shell body is arranged at the circle center of the bottom of the partition plate, discharging pipes are arranged at the bottoms of the outer walls of the two sides of the transition shell body, driving motors are arranged on the two sides of the bottom of the base, and rotating discs are arranged on output shafts of the two driving motors. According to the fertilizing device for agricultural planting, fertilizers in the storage box fall into the transition shell body, the fertilizers fall into storage holes through the discharging pipes, and after the storage holes are filled with the fertilizers, the rotating discs can be driven to rotate through the driving motors, so that the storage holes and the discharging pipes are staggered, the storage holes filledwith the fertilizers are aligned with conveying holes, the fertilizers fall into soil on the two sides of the base through extension pipes at intervals, and the fertilization efficiency is improved while quantitative fertilization is achieved.