The invention discloses an integrated vegetable waste biogas slurry automatic feeding and discharging and uniform irrigation system. The system comprises a feeding port, an automatic conveying system,a fermentation tank, a filter press, a residue outlet, a liquid outlet pipeline, a biogas slurry tank, a vacuum pump, an air blower, an exhaust port, a residue filter port, a first filter tank, a second filter tank, filtering devices, a high-pressure water pump, automatic liquid outlets and nozzles. The biogas slurry tank is provided with the air blower, the exhaust port, the vacuum pump and theresidue filter port. The first filter tank is lower than the second filter tank, and the filtering devices are arranged on sides, close to the liquid outlet pipeline, of the first filter tank and thesecond filter tank. The high-pressure water pump is communicated with the automatic liquid outlets through the liquid outlet pipeline. An automatic feeding and discharging, fermentation, biogas slurryextraction and uniform irrigation integrated technique is realized, and the system is high in efficiency and low in cost and has a promising market development prospect.