Watermelon seedling cultivation device

The utility model provides a watermelon seedling cultivation device which comprises a short supporting column, an installation frame is fixedly connected to the upper portion of the short supporting column, an adjusting climbing frame is fixedly connected to the upper portion of the installation frame, sliding groove bodies are formed in the surfaces of the two sides of the installation frame, bearing lantern rings are connected to the surfaces of the sliding groove bodies in a sliding mode, and the bearing lantern rings are fixedly connected to the lower portion of the installation frame. A distance adjusting transmission mechanism is arranged on one side of the mounting frame, and a sliding motor is arranged on one side of the distance adjusting transmission mechanism, so that the problems that the fruit surface below a bearing frame can still receive little sunlight irradiation, the quality of finished products in the process is uneven, and the quality of the finished products is poor are solved. The devic