The invention relates to a fertilizer spreader which belongs to the fields of agricultural and forest machinery. In the invention, the bottom of a cavity is provided with a baffle plate, the side wall of the cavity is provided with a through slot, a discharging hole is arranged under the through slot, a tappet rod is arranged in the cavity, a press handle and a lapping plate are arranged on the tappet rod, a feeding pipe is arranged in the cavity, the bottom of the feeding pipe is provided with a block, the side wall of the feeding pipe is provided with a discharging hole, a material limiting valve is arranged in the feeding pipe which is arranged above the discharging hole, the upper side wall of the material limiting valve is provided with a material limiting valve handle, the side wall of the feeding pipe, which corresponds to a material limiting valve handle, is provided with a through slot, the material limiting valve handle is arranged in the through slot, a material sealing sleeve is sleeved on the feeding pipe, the top of the material sealing sleeve is provided with a material guiding slot, the side wall of the material sealing sleeve is provided with lapping plates which are arranged in an opposite direction, and the bottom of the cavity is provided with a slope material guiding slot which is communicated with the discharging hole. The fertilizer spreader satisfies a large fertilizing amount requirement in forestry and agriculture production processes, reaches the fertilizing amount above 130g every time, has very high work efficiency and fertilizer utilization and low labor cost, and reduces the pollution to the environment.