Slope drainage structure capable of preventing clogging and construction method

The invention discloses a side slope drainage structure capable of preventing clogging and a construction method. The side slope drainage structure comprises a main drainage pipeline part and a buffer water tank part, the main drainage pipeline part is fixedly installed on a slope, a connector at the upper end of the main pipeline is connected with a drainage pipeline, a connector in the middle of the main pipeline is connected with a water seepage pipeline, a butt joint pipeline of the main drainage pipeline part is connected with a sewer pipeline, and the buffer water tank part is fixedly installed on the slope and fixedly connected to the two sides of the main pipeline through drainage pipelines. The main drainage pipeline part is used for introducing water flowing out of a drainage pipeline and a water seepage pipeline into equipment, and the buffer water tank part is used for buffering and shunting the water flowing out of the drainage pipeline and the water seepage pipeline and filtering impurities, gra