Kitchen waste harmless treatment and resource utilization method

The invention discloses a kitchen waste harmless treatment and resource utilization method. Collected kitchen waste materials are poured into a material collecting groove for solid-liquid separation; solid materials are fed into a five-item separation system, and residues, water, oil, impurities and solid kitchen are separated in the system through steam heating; the solid kitchen is crushed and mixed with residues and enters the drying system to be dried, so that material moisture is reduced; the dried materials enter a fermentation tank to be fermented, the fermented materials become organic fertilizer, and the organic fertilizer is subjected to secondary smashing, screening, packaging and warehousing; grease separated by the five sorts is used as a chemical raw material for producing an industrial fatty acid product; the separated swill enters a fermentation tank, and strains are added to prepare a liquid soil conditioner; the separated sundries are transferred into a garbage classification and waste recov