The invention discloses an energy emitter of a magnetic coupling mechanism shaped like the Chinese character 'ri', and belongs to the technical field of wireless energy transmission. The energy emitter of the magnetic coupling mechanism shaped like the Chinese character 'ri' is applied to wireless power supply of electric vehicles. The energy emitter includes power supply cables and multiple magnetic cores shaped like the Chinese character 'ri'; the magnetic cores shaped like the Chinese character 'ri' are rectangular-solid-shaped magnetic cores, the middle of each magnetic core is provided with two rectangular through hole, and the cross sections of the magnetic cores shaped like the Chinese character 'ri' are also shaped like the Chinese character 'ri'; the multiple magnetic cores shapedlike the Chinese character 'ri' are arranged in sequence in the length direction of a rectangular solid; the power supply cables are sequentially wound around the rectangular-solid vertical-face magnetic core segments of the magnetic cores shaped like the Chinese character 'ri' according to the arrangement sequence of the multiple magnetic cores shaped like the Chinese character 'ri'. The energyemitter has the advantages of being high in electric energy transmission power, high in efficiency, low in radiation level, low in manufacturing cost, easy to assemble, flexible in layout and the like.