Solar water heater for karst regions

The utility model discloses a solar water heater for karst regions. The solar water heater comprises a water tank, a bracket and solar heat collecting tubes, the top of the bracket is connected with awater tank; the side edge of the water tank is obliquely connected with a plurality of solar heat collecting pipes; a reflecting mirror panel is arranged on the bottom side face of the solar heat collecting pipe, the reflecting mirror panel is of an arc-shaped structure and is fixedly connected with the solar heat collecting pipe, a sealing plate is fixedly connected to the bottom end face of thereflecting mirror panel, a drainage pipe is connected to the bottom end of the sealing plate, and symmetrical side plates are connected to the two side edges of the sealing plate. The reflecting mirror panel is arranged on the bottom side edge of the solar heat collecting pipe, sunlight can be reflected to the bottom side face of the solar heat collecting pipe, meanwhile, rainwater can be collected, and a good effect is a