A socket of the invention includes a socket body, a plurality of contacts respectively having a movable piece and a stationary piece, a slidable contact moving member and a lever having a pushing portion and a pressing member. A plurality of contact displacing portions of the contact moving member are respectively positioned between the movable and stationary piece of each contact. The contact moving member is urged to prevent the contact displacing portion from moving each movable piece. The pressing member includes a curved fulcrum portion and an operating portion curved oppositely to the fulcrum portion. A first restricting portion of the socket body is in contact with the fulcrum portion and a second restricting portion of the contact moving member can be in contact with the fulcrum portion. The operating portion of the pressing member abuts to the contact moving member.