The utility model relates to a birds droppings simulation liquid drainage device. Its characteristics are: including fixture (1), this fixture (1) is connected through rotary joint (2) and syllogic drainage groove, this syllogic drainage groove includes first drainage groove (6), second drainage groove (7) and third drainage groove (8), these first drainage groove (6) are connected with second drainage groove (7) through slide rail mechanism (3), and second drainage groove (7) is connected with third drainage groove (8) through slide rail mechanism (3), and in these first drainage groove (6),all be equipped with on second drainage groove (7) and the third drainage groove (8) scale (4). The utility model discloses a whole birds droppings simulation liquid drainage device can be used for studying the influence to flashover voltage and field distribution of birds droppings simulation liquid whereabouts mode, position, route.