The present invention provides a hand-held terminal for realizing transformer substation line data acquisition and a method for realizing transformer substation line data acquisition. The hand-held terminal comprises an electricity meter hung on a transformer substation line and used for acquiring and displaying the electricity consumption of a power load of the transformer substation line, a micro-processing operation unit of the hand-held terminal is connected with an algorithm processing module and a multi-interface data acquisition module separately, and the algorithm processing module is connected with the multi-interface data acquisition module. An electricity quantity data interface of the multi-interface data acquisition module is connected with a storage data unit of the electricity meter, a power load data interface is connected with a measurement control unit of the transformer substation line, and the algorithm processing module is connected with an acquisition system. The hand-held terminal of the present invention acquires the electricity quantity data in the electricity meter and the power load remote measurement data in the line via the multi-interface data acquisition module, compares the electricity quantity data and the power load remote measurement data via the algorithm processing module, and uploads the compared data to the acquisition system, thereby saving a post processing cycle, and improving the working efficiency.