To obtain antenna fitting structure of radio equipment which surely maintain waterproofing performance, even when an antenna stopper is slanted with external force.

This radio equipment has an antenna stopper 71 positioned on an external surface of a housing case 20, and an antenna 70 is connected to the antenna stopper 71, an insulating pressure plate 81 is prepared which can have the antenna stopper 71 made to penetrate its center part, a rectangular recessed place 83 in which a rectangular flange 71c of the antenna stopper 71 can be dropped in is formed on a rear surface of the pressure plate 81, which is fitted to the housing case 20 with screws while a rubber sheet 91 is interposed between the housing case 20 and pressure plate 81, so as to obtain the antenna structure of the radio equipment.