Generally, a financial account contains a number of user information. According to the knowledge in the financial field, the daily transaction account generally includes: account number, debit amount, credit amount, balance, transaction time, counterparty account, counterparty account name, summary, purpose etc. However, some properties of transaction account are insignificant for analyzing financial transaction. In abnormal financial transaction analysis, the subject attributes are removed. Through the analysis of financial account data records, the account's transaction behavior patterns can be summarized. Thus, those transactions with significantly different behavior patterns can be identified as the clue for suspicious transaction analysis.