Solar water heater

The utility model relates to a solar water heater. The solar water heater is characterized by comprising a support, a heat gathering pipe assembly, a curtain containing drum, a protective curtain, a containing groove, a rainwater sensor and a controller, the curtain containing drum is arranged on a water tank and is internally provided with a roller; one end of the roller is connected with a drive motor; the protective curtain is wound on the roller when in a non-working state, one end of the protective curtain is the fixed end and fixed to the roller, and the other end of the protective curtain is the free end and is provided with a first magnet; the containing groove is formed near the bottom of a front leg of the support; the containing groove is internally provided with a second magnet opposite to the first magnet in magnetic property; the second magnet is used for locking the feed end of the protective curtain; the controller is electrically connected with the drive motor and the rainwater sensor. As the