The most important feature of big data is the relevance of data. On the basis of clearly describing and indexing the data, the public can quickly query the data with strong correlation through the correlation of the data, which not only improves the readability of the data, but also improves the accuracy of public decision-making. Therefore, we should strengthen the publicity of the open use of government data at the whole society level, let the public know about this work and actively participate in it, take the initiative to apply for open data, and let the public widely participate in the decision-making, evaluation and supervision of government data opening.