摘要在线翻译，不要软件翻译，各位高人帮帮忙

In this paper, the social harm of fraud to raise funds for the causes and characteristics of fraud, the study of its methods of investigation, as well as preventive measures, from the investigation to find out effective measures. This article first introduced the concept of fraud and identity crime; chapter from fraud on the community analysis of the impact of the social harm it; Chapter III of the criminal fraud of several common methods and the main characteristics of fraud; article Fourth, the focus of Chapter V of this paper, focusing on writing crime fraud detection methods and preventive measures. Criminals or the cover of legitimate business, criminals, or to lure sharks, or cozy up to the relationship to find the umbrella or to angle for praise, defrauding donors by means of defrauding the trust property of the community, social and political stability to cause great damage. Therefore, the fight against economic crimes have very important economic and political significance