The invention provides electrical insulated clothing used for power supply maintenance and with a function of positioning indication. The electrical insulated clothing comprises a clothing body, wherein an oxygen producing device is arranged at the back of the clothing body; a control device, a detection component which is connected with the control device and is used for detecting environmental data, an altitude sensing module, a physiological detection module, a storage module, a wireless communication module, a GPS (Global Positioning System) positioning module, an acceleration sensing module and an ultrasonic detection module are arranged on the clothing body; a touch screen is arranged on a cuff; when the operation is performed in low-oxygen environments such as a cable tunnel or in an environment with toxic gases, if an emergency occurs, a breathing mouth can be worn for inhaling oxygen. By acquiring current movement velocity information of an electrician, altitude information and body function information of the electrician, fatigue operation and illness operation can be prevented, personal safety accidents are effectively reduced, and the personal safety is guaranteed.