Highway subgrade slope drainage structure

The utility model discloses a highway subgrade slope drainage structure which comprises a highway pavement, a highway subgrade, a highway base and a longitudinal drainage pipeline, the highway subgrade is arranged below the highway pavement, multiple stages of transverse drainage pipelines are arranged on the highway subgrade, the highway base is arranged below the highway subgrade, and the longitudinal drainage pipeline is arranged below the highway subgrade. Drainage channels are arranged on the highway base and located on one side or two sides of the highway subgrade, the longitudinal drainage pipelines are arranged in the highway subgrade, extend to the highway pavement and are communicated with the drainage channels, and the longitudinal drainage pipelines are communicated with the multiple stages of transverse drainage pipelines respectively. The longitudinal drainage pipeline can quickly drain water on the highway pavement to the drainage channel, the transverse drainage pipeline can pour water in the