Solar water heater

The utility model discloses a solar water heater which comprises a support, a water storage box and a heat collecting tube. The support comprises a pair of upright columns, a pair of inclined columns and a pair of barrel supports. The top end of each upright column and the top end of the corresponding inclined column are correspondingly and fixedly provided with the corresponding barrel support, a cross beam is arranged between the bottoms of the inclined columns, the cross beam is provided with a row of through holes distributed evenly, a hollow barrel-shaped structure is arranged in the through holes, and the lower end of the hollow barrel-shaped structure is connected to a drive structure; the water storage box is fixed to the barrel supports; the heat collecting tube comprises a first tube body and a second tube body, the upper end of the first tube body is provided with an annular groove in a limited mode, the lower end of the second tube body is provided with an annular part, the annular part is located in the annular groove, and the front side and the rear side of the annular part are respectively provided with a rubber sealing ring; the lower end of the first tube body is inserted into the hollow barrel-shaped structure in a sealed mode, and the upper end of the second tube body is open and is communicated with the water storage box. The solar water heater is exquisite and reasonable in design and low in increased cost, water heating time is shortened, and heat-preserving time is prolonged.