Customers are cheated by bank loans, and millions of policemen will look for reference. According to the public information inquired, millions of police officers will ask the introducer to know the situation when the customer is defrauded of bank loans. The introducer didn't know about the fraud in advance, but only played the role of introduction and contact, and didn't charge any fees, so the introducer had no legal responsibility and didn't bear the responsibility of being cheated. If the introducer knew in advance (including should have known) that one party was trying to defraud, or even conspired with the other party to defraud, the introducer and the fraudster constituted a crime of * * *, and should bear legal responsibility together with the fraudster. If the amount of fraud is large, it constitutes a crime of fraud, and the introducer should also bear criminal responsibility.