An electrically conductive structure of a micro switch capable of letting users know about the reciprocal movement of a switch button, comprising a base, having an electrode module installed in a containing groove formed at the top of the base; an axis cylinder slidably installed in the containing groove; a conical sleeve made of a soft high temperature resisting material and disposed between the axis cylinder and the electrode module; a metal conductive bump formed at the top of the conical sleeve and driven by the axis cylinder to compress and release the conical sleeve to connect and disconnect the electrode module, and the axis cylinder moves reciprocally to produce a hand-pressing feeling, and the containing groove has as sheathe made of a soft high temperature resisting material to block external liquid from entering into the containing groove to improve the service life of the switch.