The invention discloses a chemical fertilizer storage tank for agricultural fertilization. The chemical fertilizer storage tank comprises a container, filter nets, a fixed rod and fixed tubes, the funnels are arranged above the right side of the container, a pin rod is mounted at the right sides of the funnels, a handle is fixed at the right side of the pin rod, the right side of the handle is connected with a rotating shaft, blades are arranged at the right sides of the filter nets, the filter nets are located in the container, a connecting block is mounted at the right side of every blade, the right side of every connecting block is connected with a fixed block, a valve is mounted below every fixed tube, the fixed tubes are located below the container, a flow dividing tube is fixed belowevery valve, the lower part of every flow dividing tube is connected with fertilizing tubes, and universal wheels are mounted below the left side of the fixed rod. Compared with existing common chemical fertilizer storage tanks, the chemical fertilizer storage tank for agricultural fertilization has the advantages of convenience in moving, realization of position adjustment at any time, uniformity in stirring a chemical fertilizer in the tank, no obstruction, and high working efficiency in the fertilization process.