A mobile terminal includes a base body, a pair of slidable bodies and a pair of switch mechanisms disposed on the slidable bodies. Each of the switch mechanism includes a housing, a cover, an operating member, a locking member and a spring unit. The operating member includes a coupling portion received in the housing and an operating cap located out of the housing. The coupling portion includes a base bevel. The locking member received in the housing includes a sliding bevel contacting to the base bevel and a locking block passing through the cover and engaging with the base body. The spring unit urges between the locking member and the housing. When the operating cap is pressed towards the housing, the base bevel engages with the sliding bevel to drive the locking member compress the spring unit, thereby the locking block disengaging from the base body.