A mobile terminal comprises: a case that has an insertion hole formed on a side surface thereof; a metal beam that includes a side metal covering the side surface of the case, and a connection bridge penetrating the insertion hole and extending towards the inside of the case from the side metal; a fixing device that is inserted into a fixing hole formed on the connection bridge so as to be fastened to the case; and a waterproof packing that is interposed between the side surface of the case and the side metal, and that has an opening part through which the connection bridge passes. As a result, water cannot get inside the terminal, and malfunctioning due to water permeation can be prevented thereby.