The invention relates to an automatic feeding and discharging device for ring bobbins. The device comprises a rack and an annular guide rail, a conveying cart is slidingly connected to the annular guide rail, and multiple sleeves are horizontally arranged on the conveying cart; a conveying belt, a feeding mechanism and a discharging mechanism are arranged on the rack, and the feeding mechanism andthe discharging mechanism are arranged in the running direction of the conveying belt in sequence; multiple storage grids are arranged on the conveying belt, and the ring bobbins are arranged in thestorage grids; the feeding mechanism comprises a first rodless air cylinder, pushing plates arranged at the two sides of each storage grid respectively and a guide block, the pushing plates are connected with the first rodless air cylinder, the guide block sleeves a guide rod, a spring sleeves the guide rod, and multiple guide grooves are formed in the guide block; the discharging mechanism comprises a second rodless air cylinder and an air pawl support which are connected, and multiple air pawls are arranged on the air pawl support and located over the storage grids. According to the device,the labor intensity of feeding and discharging is reduced, and the feeding and discharging efficiency is improved.