The invention discloses a landfill leachate treatment apparatus, which comprises a treatment box and a waste liquid pool, wherein the left side and the right side inside the treatment box are respectively and fixedly connected to a compression plate through compression rods, the bottom portions of the two compression plates are respectively and fixedly connected to an inclination plate, the bottomportion of the outer shell of the treatment box is connected to a water outlet member, one end of the water outlet member is communicated to a water outlet pipe, the four corners inside the waste liquid pool are respectively and fixedly provided with an aeration pipe, and the middle portion of the inner surface of the waste liquid pool is provided with a stirring device. The invention relates tothe technical field of landfill leachates. According to the present invention, garbage and landfill leachate can be rapidly separated by combining the compression rods and the compression plates, theactivity of the landfill leachate can be increased by combining the stirring device and the aeration pipes, such that the reaction between the landfill leachate and the regulated substance is completeand uniform so as to substantially improve the reaction efficiency.