NOVELTY - A Chinese chestnut organic inorganic compound fertilizer is prepared by taking 1 pt. wt. carbonized wood residue powder and 6-10 pts. wt. perlite, mixing, heating at 60-65 degrees C for 10-15 minutes, cooling to obtain suction release matrix material, taking 1 pt. wt. starch and 45-55 pts. wt. clay powder, stirring to obtain insulating matrix material, taking soil, drying, grinding into 100 mesh to obtain parent matrix material, taking 1 pt. wt. fermenting powder, 9-11 pts. wt. Chinese chestnut root branch powder and 45-55 pts. wt. animal manure, mixing, stacking, and fermenting.    USE - Method for preparing Chinese chestnut organic inorganic compound fertilizer (claimed).    ADVANTAGE - The fertilizer is environment-friendly and rich in nutrition. It promotes high product yield and quality.    DETAILED DESCRIPTION - A Chinese chestnut organic inorganic compound fertilizer is prepared by taking 1 pt. wt. carbonized wood residue powder and 6-10 pts. wt. perlite, mixing, heating at 60-65 degrees C for 10-15 minutes, cooling to obtain suction release matrix material, taking 1 pt. wt. starch and 45-55 pts. wt. clay powder, stirring to obtain insulating matrix material, taking soil, drying, grinding into 100 mesh to obtain parent matrix material, taking 1 pt. wt. fermenting powder, 9-11 pts. wt. Chinese chestnut root branch powder and 45-55 pts. wt. animal manure, mixing, stacking, fermenting, decomposing for 40-45 days, turning once every 9 days, adding 1 pt. wt. yeast powder, stirring, keeping temperature at 65-75 degrees C, fermenting for 40-45 days, adding 200 pts. wt. black powder, stirring to obtain root branch fertilizer, taking 1 pt. wt. suction release matrix material, 1 pt. wt. insulating matrix material, 1 pt. wt. parent matrix material and 7-13 pts. wt. root branch fertilizer, mixing, obtaining material mixture, detecting nitrogen, phosphorus pentoxide, potassium oxide organic substance content, adding nitrogen, phosphate and potash fertilizers, mixing, preparing inorganic fertilizer, mixing, and granulating.