Smart toy for portable device

PURPOSE: A smart toy for a portable terminal is provided to express reaction due to interaction between a certain character and a user of the portable terminal in the motion of the character, thereby expressing the portable terminal and enhancing interests and fun as entertainment factors. CONSTITUTION: A smart toy for a portable terminal comprises a mechanism part(10), an actuating part, a circuit part, and a terminal part. The actuating part comprises a magnet and a coil. An actuated part implements a predetermined actuation by the actuating part actuated by a control signal. The control signal is an audio signal from the audio output terminal of the portable terminal. The circuit part includes a signal converter converting the audio signal into an actuating signal for actuating the actuated part.