The data mining on web is difficult for online analytic processing (OLAP) with BIG DATA. The data mining is made simple by approximating the databases of BIG DATA for knowledge discovery process particularly MapReducing. The approximate information is fuzzy rather than probability. In this paper, fuzzy web data mining is discussed for BIG DATA for association rules. The query processing is discussed with SQL and Xquery for fuzzy data mining the fuzzy Algorithms are discussed to design queries in data mining. Some examples are discussed for fuzzy web data mining