A connector module includes an electrical connection structure including: a plurality of electrical wires; and a wiring plate on which the electrical wires are wired. Each of the electrical wires is coated with an insulating coating, and includes: a wiring portion wired on the wiring plate; and an electrical connection portion to be physically and electrically connected to a counterpart electrical connection portion. The wiring plate includes a surrounded recess-shaped portion. The electrical connection portion and the counterpart electrical connection portion are arranged in the recess-shaped portion and are formed such that a physical and electrical connection part thereof is housed in the recess-shaped portion. The connection part is covered with an insulating member.