Abstract: A radio toy having a plastic toy structure with a body portion erectly fixed on the top of a hollow base and a head portion with a movable lower jaw disposed on the top of the body portion, includes a radio set installed in the hollow base and a magnetic device provided in the mouth of the toy structure in connection with the radio set; thereby, opening and closing of the toy mouth will be automatically effected along with the amplitude of the audio frequency produced by the radio set so as to increase the amusing actions of the radio toy and to stimulate the intelligence of the player.