It is an objective to enhance sealing performance of a resin mold without subjecting a connector housing to special work. In an electric wire connection structure of a connector terminal in which an end of an electric wire (W) is connected to a rear portion of a connector terminal (10) and in which the electric wire connection is sealed of a resin mold (20), a step (d) that makes an underside (13b) of a rearmost end of the connector terminal (10) higher than an underside of an area ahead of the rearmost end is provided between the underside (13b) of the rearmost end and the underside (12b) ahead of the rearmost end, thereby assuring space (22) that enables filling of a resin which makes up a resin mold (20).