An electrical signal switch connector structure is provided, mainly including an insulating case, an elastic terminal, a fixing terminal, and a shielding case. The insulating case respectively accommodates the elastic terminal and the fixing terminal. The elastic terminal has an elastic arm, and the elastic arm of the elastic terminal has a cutting gap. The fixing terminal has a fixing arm, and the elastic arm of the elastic terminal is elastically pressed against the fixing arm of the fixing terminal. An inlet hole of the insulating case is used for passing a terminal of a butting connector therein, and the shielding case wraps the insulating case profile such that an ambient extraneous matter is not attached to the elastic arm of the elastic terminal.