The invention discloses an insertion type fertilizer box special for a peach tree, and the fertilizer box can be directly inserted into soil at the root of the peach tree for applying fertilizer. According to the fertilizer box, fallen leaves of the peach tree are minced, the decaying treatment is conducted, then the fallen leaves are mixed with bagasse, organic fertilizer, loam and ice blocks and earthworms are added so that filling fertilizer can be formed, then the filling fertilizer is placed in a conical shell, and the conical shell can be inserted into the soft soil at the root of the peach tree for applying the fertilizer. Due to the fact that through holes are formed in the conical shell, the earthworms can move around in the area adjacent to the root of the peach tree outside the conical shell for performing activities beneficial to the soil such as soil loosening, the fertilization and soil loosening can be conducted simultaneously, the use is quite convenient, the nutrients are most close to the requirements of the peach tree, in addition, holes are further formed in the upper portion of the conical shell, other fertilizer can be added in regularly or irregularly, fertilization is conducted by acting on the root of the peach tree directly, and novel fertilizer combination is achieved.