Landslide geotechnical model test device

The invention provides a landslide geotechnical model test device. The landslide geotechnical model test device comprises an airflow generator arranged on the upper side of a landslide geotechnical model slope, wherein the airflow generator is of a cone-shaped cylinder structure, the lower side of the airflow generator is provided with at least one tangential air inlet, and the upper side of the airflow generator is provided with an air outlet; the airflow generator is connected with a model box by virtue of one first connection rod and one second connection rod, the top of the first connection rod is provided with a wind inlet positioned in the top of the model box, and the top of the second connection rod is provided with a wind outlet positioned in the top of the model box; the wind inlet and the wind outlet are respectively of a trumpet-shaped structure, the wind inlet is connected with the tangential air inlet by virtue of a pipeline, and the wind outlet is connected with the air outlet by virtue of a pipeline. The landslide geotechnical model test device can produce airflow outside a landslide geotechnical model, so that the influence of extreme airflow conditions such as typhoon and tornado on a landslide can be simulated in a centrifugal model test.