The equipment used for photovoltaic backplane glass screen printing is transformed from automotive glass screen printing equipment. Although it can meet the basic needs, it has many problems such as low production efficiency, easy to paste, and screen cleaning difficulty. This paper proposes a cylindrical screen mechanism that moves in circle, while the glass moves in a straight line. The oil knife and the scraper mechanism cooperate to print ink on the upper surface of glass, and the suction cup assembly sends the back glass to the inspection conveying section. The cylindrical screen mechanism is set up with two parallel sets, which can realize the functions such as non-stop screen change, automatic screen cleaning, etc., eliminating the necessary of intermittent operation after each screen change in traditional screen printing.