The invention provides an electric connector for the connection of substrates, and the electric connector is simple in structure, prevents the deformation of contact parts through improving the tracing capability of the contact between contact parts, improves the contact stability, and can improve connection reliability of vibration resistance or durability of a connector and reduce the cost. Theinvention can achieve the electric connector (11) through the following scheme that the electric connector (11) is used for the connection of the substrates which enable a plug connector (40) and a socket connector (20) to be embedded in a manner of free assembly and disassembly, wherein a body part (243) of the socket contact part (24) is provided with at least one or more slot parts (244), and agap part (27) which can enable the body part (243) of the socket contact part (24) to move is disposed between the body part (243) of the socket contact part (24) and the base part (221) of the socket housing (22).