A connector includes a connector housing, an inner plate that supports a terminal connected to a one end portion of an electric wire and that is accommodated in an inside of the connector housing, and filler material that fills the inside of the connector housing which has accommodated the inner plate and that is then hardened so as to cover a connection part of the electric wire and the terminal. The filler material adheres to a first portion within an inner surface of the connector housing and to an outer surface of the inner plate. A release layer is provided between a second portion within the inner surface of the connector housing and an outer surface of the filler material opposite to the second portion.