The invention relates to the field of compound fertilizer and particularly discloses special functional fertilizer for peanuts. The special functional fertilizer for the peanuts is prepared from raw materials including urea, 55% monoammonium phosphate, ammonium sulfate, ammonium hydrogen carbonate, humic acid, an additive and clay in a certain weight ratio through mixing, wherein the additive is a mixture of overdue milk powder, grondverbeteraar, calcium amino acid and dicyandiamide. The special functional fertilizer is simple to prepare, product nutritional ingredients enhance the activity of nitrogen fixation nodule bacteria of the peanuts on the premise that sufficient soil microorganisms are added, besides, the production ratio of phosphorus to potassium is moderate, downward rooting of root systems of the peanuts can be accelerated, the number of soil deep-layer root systems and the activity of later root systems are increased, the fertilizer can be rapidly transferred to pods, and the pods are accelerated to be plump and full.