Solar heat collection device capable of heating and descaling in sections

The invention provides a solar heat collection device capable of heating and descaling in sections. The solar heat collection device capable of heating and descaling in sections comprises a heat collection pipe box, a left upper pipe, a right upper pipe and a heat release pipe set, a first outlet and a second outlet are formed in one side of the heat collection pipe box, an electric heater is arranged into a plurality of sections in the length direction of the heat collection pipe box, each section is independently controlled, with the change of time, the electric heater is sequentially started in the direction opposite to the flowing direction of fluid in the box body within the front section time in a period until all the sections are started and then are sequentially closed from the flowing direction of the fluid until the period is ended, and all the sections are closed. According to the solar heat collection device, the electric heaters are gradually started in the flowing direction of the fluid, so that