An electrical detection method provides a wiring structure including a base material body and a plurality of contact portions bonded to the base material body. Each of the contact portions includes an electrical detection pad exposed from a surface of the base material body, an electrical auxiliary pad exposed from the surface of the base material body, and a conductor that electrically connects the electrical detection pad and the electrical auxiliary pad. When probes of a detection device are connected to the contact portions, each of the probes exerts a force on the electrical detection pad and the electrical auxiliary pad of each of the contact portions at the same time, so that the contact force between the probes and the contact portions is enhanced to facilitate the electrical testing.