The utility model relates to a built -in acousto -optic warning guy insulator, including drawing the spike pulling, the inside of drawing the spike pulling is equipped with alarm component, and alarm component includes control panel, small -size warning light and vocal ware, and the control panel is connected with small -size warning light, vocal ware electricity respectively, the utility model discloses the global design is simple, and structural design is equitable, also has the electric capacity characteristic when utilizing insulator self high impedance characteristic, utilizes guy insulator itself as the electric capacity of " step -downs ", makes the 10kV high pressure reduce the voltage that can work to the reputation component, has set up in alarm component promptly rather than the relevant parts that are connected, and it does not realize reporting to the police with the help of external power to reach sets up the state of self working, and holistic design is energy -concerving and environment -protective, especially adapted popularization.