A mobile terminal comprises a first frame, a second frame capable of slidably moving from the first frame in a first direction or a second direction which is an opposite direction of the first direction, and a driving unit slidably moving the second frame, wherein the driving unit includes a motor coupled to the first frame, a first pinion gear rotated by a rotational force transferred from the motor, a first gear rack extended in the first direction, moving in the first direction or the second direction when the pinion gear is rotated, a second pinion gear rotated in accordance with movement of the first gear rack, and a second gear rack coupled to the second frame, moving from the first gear rack in the same direction as the moving direction of the first gear rack in accordance with rotation of the second pinion gear. A length of the gear rack may be obtained to enlarge an area of the mobile terminal when the mobile terminal is extended.