Abstract: The lightning current is the most important physical quantity to describe the lightning discharge and is significant to the relative research of lightning protection, so, the measurement of lightning current is always the fundamental work in the lightning research area. To adopt the natural lightning current full wave shape, a set of lightning current full wave measurement system at the lightning rod of Zifeng Tower (about 450 m) is installed to monitor the stroke current of lightning stroke to building and lightning upward leader current of the building for long time. This system includes two subsystems, which consist of lightning current sensor, data transmit system, data collection system and long-distance control system re-spectively, and can measure stroke current and upward leader current of the building and have significance to the research of high tower natural lightning current in East China. In this paper, we introduce the installed lightning current measurement system firstly, and then analyze two sets of measured lightning upward leader current data comprehensively to adopt the relative characteristics of lightning upward leader current waveform of high building.