Water quality sampling device

The utility model discloses a water quality sampling device which comprises a supporting table, a winch, a sampling rod and a sampling barrel, the sampling rod is transversely arranged and detachably connected with the supporting table, the winch is arranged on the supporting table, and a connecting rope of the winch can be wound around the end, away from the supporting table, of the sampling rod. The sampling barrel can be detachably connected with the end, away from the supporting table, of the sampling rod and the end of a connecting rope of the winch. When rod type water-entering sampling is needed, the sampling rod is taken down from the supporting table, the sampling barrel is installed at the end of the sampling rod for sampling, and when the container needs to be hung into water for sampling, the sampling rod is installed on the supporting table to serve as a hanging arm. A connecting rope of the winch is wound at one end, far away from the supporting table, of the sampling rod and is connected with t