An IC socket, adapted for electrically connecting an IC package and a printed circuit board, includes a base, a socket body received in the base, a plurality of contacts received in the socket body, and an actuating mechanism moveably assembled on the base. The socket body includes a first insulative housing and a second insulative housing located under the first insulative housing. The actuating mechanism can actuate the first insulative housing and a second insulative housing to move in a horizontal direction relative to each other and drive the contact to stretch in a vertical direction.