The invention discloses a fertilizer box special for pomegranate trees, which can be directly inserted into soil at roots of pomegranate trees to fertilize. According to the fertilizer box, fallen pomegranate leaves are crushed and rotted and are mixed with cane residues, organic fertilizers, soil and ice, earthworms are further added so as to prepare a filling fertilizer, the filling fertilizer can be further filled into a conical shell, and then the conical shell can be inserted into soft soil at the roots of the pomegranate trees to fertilize. As through holes are formed in the conical shell, earthworms can move outside the conical shell near the roots of the pomegranate trees to take activities beneficial for the soil such as loosening the soil, so that the purposes of fertilization and soil loosening can be achieved simultaneously. The fertilizer box is very convenient to use, nutrient components are most approximate to the demands of the pomegranate trees, and in addition, an opening is further formed in the upper part of the conical shell, so that other fertilizers can be added at regular or irregular time, the fertilizers can directly act on the roots of the pomegranate trees to fertilize, and thus novel fertilizer combination can be achieved.