The utility model discloses a fermentation cylinder for nanometer nutrient media produces organic liquid fertilizer, including upper cover, jar wall, tank bottoms, feed inlet, ventilation valve, motor, airtight bearing, venturi tube, baffle, agitator, temperature -sensing probe, thermometer, barometer, delivery port, delivery port valve, water pipe, frequency -variable controller, its characterized in that: the utility model discloses a bottom water proof heating, the structure that the venturi tube was ventilated and is combined together with the baffle, adopt the water proof to heat the temperature control of being convenient for, the saccharification is with fermented same jar of internal completion, adopt the venturi tube with nanometer matrix from tank bottoms suction atomizing under the pure air effect of high pressure, make matrix and oxygen fully contact, simultaneously with the baffle high velocity impact, untie microorganism reunion bacterial colony rapidly, prevent to age, and messenger's matrix and bacterial strain homogenization, and shortens fermentation time, the realization fermentation time is short, bacterial strain concentration is high, the fungus crowd is of high quality, the matrix utilization is abundant. And the shortage of the prior art is overcome.