An electromagnetic hybrid gear ring-free planetary gear transmission system, comprising an input shaft (1). An input end planetary carrier (4) and multiple electromagnetic gears (17, 18, 19, 20) are mounted on the input shaft (1). The multiple electromagnetic gears (17, 18, 19, 20) are respectively controlled, by means of four switches (14), to operate or not to operate. The electromagnetic gears (17, 18, 19, 20) and multiple evenly arranged output magnetic gears (6, 7, 8, 9) form groups. The centers of the multiple output magnetic gears (6, 7, 8, 9) in different groups and the same direction are connected, on a same straight line, to a same planetary gear rotating shaft I (10). The planetary gear rotating shaft I (10) is connected to an output end planetary carrier (11). The input end planetary carrier (4) is connected to a planetary gear rotating shaft II (5). The planetary gear rotating shaft II (5) is eccentrically connected to the multiple output magnetic gears (6, 7, 8, 9) in different groups and the same direction.