The present invention relates to a motion input device for portable terminal and an operation method using the same. A motion input device of a portable terminal of the present invention includes a sensor unit configured to collect a sensor signal from at least one sensor; an operation recognition unit configured to generate a motion signal corresponding to an operation of portable terminal based on the sensor signal; a scenario preparation unit configured to generate an input scenario based on at least one motion signal; and a scenario mapping unit configured to detect, in a scenario database, a standards scenario corresponding to the input scenario, and to generate an input signal corresponding to the standards scenario.