The invention relates to an organic fertilizer for cucurbita pepo. The organic fertilizer comprises the following components in parts by mass: 40-50 parts of livestock manure, 5-7 parts of humic acid,20-30 parts of chrysanthemum leaf powder, 20-40 parts of apple grains, 13-17 parts of sludge, and 50-70 parts of water. The organic fertilizer is prepared by the following steps: 1) composting and sterilizing livestock manure at high temperature; and drying by air for later use; 2) fermenting the apple grains and drying by air for later use; 4) crushing the raw materials obtained in step 1) and 2) to obtain powder; 4) uniformly stirring the materials obtained in step 3) with humic acid and chrysanthemum leaf powder, adding water, and continuously stirring to obtain paste; and 5) pelletizing through a pelletizing machine. With the adoption of the fertilizer, the yield of cucurbita pepo can be increased, the taste is improved, and moreover, the organic fertilizer is environmentally friendlyand free from hormone residue and can improve the land use rate; the organic fertilizer has obvious environmental protection value and economic benefits; particularly, the chrysanthemum leaf powder is added, so that the cold property of cucurbita pepo is improved.