Fraud in the telecommunications industry is growing, and it has seriously affected the development of the industry. Naive Bayesian Classification in data mining has a market value in the anti-fraud systems used in telecommunications. And it can tap the potential risks and identify the customers' fraud, so as to solve much small-scale dispersion of a large telecommunications fraud. With the rapid development of the telecommunications market, telecommunications fraud in the industry is also increasing. According to statistics, the losses caused by the telecommunications fraud are 5% to 10% of th...