More .crimes of fraud make more . people who receive the messages lose money and felt great fear, which is a huge damage to Taiwan. There are many kind of fraud, included telemarketing fraud, lottery fraud and Automated Teller Machine fraud, etc. Message receivers are not understand the difference is between truth and fraud, and many message receivers reject all the messages they receive than believing racketeers and lose their money and time. There are many common cases of fraud, and related analysis is included in the study. There are four keypoints why message receivers were victims after asking for experts¡¦ opinions, including extra-environmental factors, forms of fraud, message receivers who do not have enough knowledge about fraud and message receivers¡¦ personal factors. Finally, the study designed a questionnaire to investigate what cognition, experience and attitude subjects had. The population of study is the citizens in Kaohsiung. The research uses the elaboration likelihood model as the research method and the situation stimulated to design the questionnaire. The research result is shown as following: the difference between receptions of subjects in the case of common fraud and the case of non-common fraud is significant, and the personal factors gender, age, education level and monthly homehold income level significant to receptions of the subjects.