The utility model relates to a mobile inquiring terminal for data of power transmission lines. The mobile terminal comprises a microprocessor, a memory, an input module and a display, wherein the microprocessor is connected with the memory, the input module and the display; the output terminal of a COMS image sensor is connected with the input terminal of a picture recognizer, and the output terminal of the picture recognizer and the output terminal of a GPS positioning module are connected with the input terminal of the memory; the microprocessor is connected with a pole tower database server through a wife module. When the power transmission lines are in failure, the relevant data about pole tower types, pole tower materials, insulator types, wire types, grounding forms, foundation types, geology, geography and the like at failure positions can be rapidly inquired, a large number of inquiring time is saved, the failure repairing time is shortened, and the working efficiency is improved. Besides, the rest for newly adding or modifying the power transmission lines can be added and supplied at any time, the operation is convenient and flexible, the time is saved, and the cost is reduced.