An electrosurgical pencil comprises a housing being an elongated shape member, and including a conical head end with an opening fixed on a front end there and including an upper housing part and a lower housing part connecting with each other, wherein the upper housing part includes a first and a second holes proximate the opening a control panel disposed in an interior of the housing, and including controlling member secured thereon in response to the first hole and the second hole and including an engaging head mounted at a front end thereof in response to the opening of the housing to retain a blade two buttons fixed in the first and the second holes respectively to correspond to the controlling member of the control panel so as turn on and off the blade, thereby enabling to switch the blade easily and to obtain preferred stability.