NOVELTY - Controlled release granular organic fertilizer comprises food factory waste, tobacco plant ash, wood ash, potassium dihydrogen phosphate, selenium-enriched additive, hawthorn, sawdust, urea, sodium nitrophenolate, tea leaves, potassium fulvate, shell powder, Pleurotus eryngii waste fungus dreg, olive residue, zinc sulfate, modified corn starch, fennel, manure, wine waste, garlic extract and Chinaberry tree fruit extract.    USE - Controlled release granular organic fertilizer.    ADVANTAGE - The controlled release granular organic fertilizer has high content of organic materials and great water absorption capacity and water retention, achieves good crop nutrient absorption, slowly releases nutrients to crops, ensures longer crop growth nutrient supply, and increases soil organic matter content for soil improvement.    DETAILED DESCRIPTION - Controlled release granular organic fertilizer comprises 45-55 pts. wt. food factory waste, 8-12 pts. wt. tobacco plant ash, 25-35 pts. wt. wood ash, 4-6 pts. wt. potassium dihydrogen phosphate, 1.5-2.5 pts. wt. selenium-enriched additive, 4-6 pts. wt. hawthorn, 2-4 pts. wt. sawdust, 1-3 pts. wt. urea, 0.1-1 pt. wt. sodium nitrophenolate, 1-3 pts. wt. tea leaves, 4-6 pts. wt. potassium fulvate, 0.4-0.8 pt. wt. shell powder, 1-2 pts. wt. Pleurotus eryngii waste fungus dreg, 1-2 pts. wt. olive residue, 1-2 pts. wt. zinc sulfate, 1.5-2.5 pts. wt. modified corn starch, 0.2-0.4 pt. wt. fennel, 3-5 pts. wt. manure, 3-5 pts. wt. wine waste, 1-2 pts. wt. garlic extract and 1-2 pts. wt. Chinaberry tree fruit extract. An INDEPENDENT CLAIM is included for preparation of controlled release granular organic fertilizer comprising weighing the raw materials, separately storing selenium-enriched additive, taking the raw materials except selenium-enriched additive, crushing, sieving by 80-mesh sieve, mixing uniformly to obtain mixed material, adding into a freezing device, freezing for 5-6 hours at 10-15 degrees C, adding into a drying device, drying for 5-8 minutes at 75-80 degrees C to obtain roasted material, adding binder and selenium-enriched additive, mixing uniformly, adding into drum pelletizer, and obtaining granular fertilizer having grain diameter of 0.5-2 mm.