PROBLEM TO BE SOLVED: To provide a fertilizer spreader having a simple structure in which the production cost is suppressed low, a low volume spray is made possible, and the supply precision (spreading precision) of fertilizer in the low volume spray is improved.SOLUTION: A fertilizer spreader is provided in which the opening degree of opening adjusting holes 213A, 213B is adjusted by operating a shutter operation part and being overlapped only one fertilizer falling outlet 210 of a hopper bottom plate 201, and the opening degree is adjusted after one fertilizer falling outlet 210 is completely overlapped and opened, and other two or more fertilizer falling outlets 210 starts overlapping. Also, the fertilizer spreader is configured so that the fertilizer falling outlet 210 initially overlapped continues overlapping when the other two or more fertilizer falling outlets 210 start the overlapping and the opening degree is adjusted.