XBRL is a kind of extensible business reporting language which based on XML, it has been widely used in the financial system. More and more enterprise financial data bring us to use the method of data mining to dig out the important information we need. Puts forward a DC-Apriori algorithm facing XBRL, the experiment shows that using DC-Apriori algorithm in X-Hive to excavate XBRL data is feasible and effective, and the efficiency of DC-Apriori algorithm is higher than Apriori algorithm.