Telescopic portable electricity testing device

The invention relates to a telescopic portable electricity testing device, which belongs to the technical field of high-voltage electricity testing equipment and comprises a sensing electricity testing part, a movable telescopic part and a holding control part which are sequentially connected from left to right, the holding control part is nested in the movable telescopic part and always keeps circumferential relative rotation with the movable telescopic part, the sensing electricity testing part is axially driven to move forwards and backwards in the horizontal direction at the same time, the sensing electricity testing part comprises a low-voltage measuring range and a high-voltage measuring range, and a switching button and an induction alarm are arranged on the sensing electricity testing part. The switching button is used for switching the measuring range, electricity testing is conducted on low-voltage and high-voltage electric equipment, and automatic alarming is conducted through the induction alarm.