The invention discloses a material transport method between process points of a photovoltaic production line. A mobile robot receives an instruction to transport materials from one process point to another, and the mobile robot and the process point dock based on near field communication to take or discharge materials. In the operation method and system of the invention, the flower baskets are transported from one process point to another on the photovoltaic production line by means of a mobile robot instead of manual human effort, significantly improving the automation degree and production efficiency of the photovoltaic production line, ensuring transportation safety, and reducing labor cost.