Current is usually considered to be formed by the directional movement of charge. In addition to this classical explanation of electromagnetism, from the perspective of physical phenomenon, current also has "wave" conduction characteristics. Understanding current from the "wave" characteristics and conducting corresponding experimental verification can give us a deeper understanding of current. According to the "fluctuation" characteristics of current and the "lossless" propagation principle of optical fiber, the research team conducted 613 experiments on the combination of different conductor materials with PN junction materials of different materials and different junction depths. Under the conditions of boron-phosphorus type PN junction material, junction depth of 0.356um, wire cross-sectional area of 25mm², at room temperature, The resistance value of the conductor material is close to zero, and the nondestructive conduction of current in a real sense is realized near -32.3℃, without the help of external ultra-low temperature and other conditions, which lays a new theoretical and experimental foundation for the human energy revolution.