NOVELTY - Producing liquid state organic ecological fertilizer, involves performing conventional mechanical filteration of bio-organic waste liquid, passing filtered organic waste liquid to bioreactor, obtaining fermentation liquor, adding inoculum containing e.g. Geobacillus to fermentation liquor, providing oxygen and pressure to the reaction, draining condensed water, pumping concentrated liquid to modified reaction kettle, adding e.g. nitrogen element to the kettle, and mixing well to obtain organic ecological fertilizer.    USE - The method is useful for producing liquid state organic ecological fertilizer by anoxic fermentation (claimed).    ADVANTAGE - The method utilizes carbon and nitrogen source in biological organic waste liquid and thus cultivation cost is reduced, improves oxygen utilization efficiency, lowers heat loss, consumes less energy, prevents run off of nutrient elements and active factors in fermentation liquor and hence the organic ecological fertilizer is rich in nutrient elements and active factors, maintains product quality, and produces product with excellent storage stability.    DETAILED DESCRIPTION - Method for producing liquid state organic ecological fertilizer, involves (a) performing a conventional mechanical filteration of bio-organic waste liquid, passing filtered organic waste liquid to the bioreactor, adjusting the pH of the bioreactor to 5.5-6.5 by adding alkaline auxiliary material, obtaining fermentation liquor, maintaining the liquor at 60-65 degrees C, adding 1-5% inoculum containing Geobacillus?Alicyclobacillus acidocaldarius?Bacillus thermocatenulatus?B.kaustophilus and B.stearothermophilus to the fermentation liquor, providing oxygen to the fermentation for 15-20 hours under micro-pressure condition, stopping fermentation for 4-20 hours, where the fermentation does not need external heat, providing pressure to the reaction by starting vacuum pump, where vacuum concentrating device is in negative pressure, performing fermentation at 70-80 degrees C, draining condensed water, controlling the content of organic substance in the fermentation liquor to more than 10%, pumping concentrated liquid to modified reaction kettle, adding nitrogen element, phosphorus element and potassium element to the kettle, and mixing well to obtain organic ecological fertilizer.