Abstract: With the rapid development and deep application of big data analysis technology in power grid, data label technology provides people with a new idea of data integration. Big data labels for power equipment can realize rapid identification and extraction of useful data from massive and discrete data in a flexible way, which not only contributes to make multidimensional judgments on power equipment for power grid operators, but also provides a basis for subsequent power data mining modeling. A multi-dimensional data labeling system for power equipment is proposed, which lays a foundation for realizing intelligent monitoring of power grid.