The invention relates to automatic bonding equipment of a sealing ring of an end cover of a filter. The automatic bonding equipment comprises a machine body which is provided with a rotary disc driven by a motor, and a positioning disc is arranged in the middle of the rotary disc, is fixed to the center position of the rotary disc through a bolt, and comprises a lower positioning layer and an upper positioning layer; the diameter of the outer wall of the lower positioning layer corresponds to the inner diameter of the sealing ring, the thickness of the lower positioning layer is smaller than the thickness of the sealing ring, the diameter of the outer wall of the upper positioning layer corresponds to the inner diameter of the outer ring, and the thickness of the upper positioning layer is smaller than the thickness of the outer ring; a gumming air cylinder installed on the machine body is arranged beside the rotary disc, and a gumming head is installed on the gumming air cylinder and connected with a gumming pipe; and a pressure plate is installed above the positioning disc, a downwards-pressing air cylinder is installed on the pressure plate, a guide rail is installed at the top of the machine body, a sliding installation rod is installed on the guide rail, the downwards-pressing air cylinder is fixed to the sliding installation rod, and a push-pull air cylinder for pushing and pulling the sliding installation rod is installed at the top of the machine body.