Hydrological sampling device

The utility model provides a hydrological sampling device which comprises a cart, a workbench is arranged on the cart, a support is fixed on the workbench, an extension part is arranged on the support, and a fixed pulley is arranged on the extension part. A main pulley is arranged on a support of the workbench, a cable penetrates through the main pulley and the fixed pulley, the end, located below the fixed pulley, of the cable is fixed to the base, and the other end of the cable is wound around the main pulley. A sampling pipe is fixed at the lower end of the base, and a water pumping pipe is fixed at the upper end of the base; the other end of the water pumping pipe is connected to a pump station, a water outlet of the pump station is communicated with a water outlet pipe, and the other end of the water outlet pipe is communicated into a measuring vessel with scale marks. According to the utility model, the measuring vessel, the pump station, the sampling pipe, the bracket with the extension part, the main