In recent years, research has shown that the issue of security is an essential indicator for public well-being. Along with the advance of science and technology, the application of monitor, which includes the field of crime investigation and prevention, has become more and more importance. Furthermore, the location of monitor is also involved with personal privacy. As a result, it is necessary to prove which one is better for explanation of sense of happiness. Based on the Maslow theory of needs, this study explores the relationship between Kaohsiung resident needs and the installation of monitor in terms of quantitative research methods. For the variable of installation demand, it adopts the way of self-questionnaire mining dimensions including security, social, respect, self-actualization and cognitive needs. After validity analysis, the positive cognitive demand had three factors along with seven independent variables, the reliability above 0.7. Dependent variable of the installation of monitor was adapted from Chinese version of Hu Yan (2000). In this study, the version of SPSS 12.0 software was used for statistical analysis along with Likert scale scores. The higher score of scale is, the more sense of happiness does. After practical analysis, it was found that the people with installed monitor will have higher degree of feeling and safety, not to mention the sense of happiness. They feel that they live in the protection of life and have a sense of accomplishment more than the other events of middle level. In terms of age, work, marriage, positive cognitive and living environment, there is significant difference among them. However, there is no significant difference between monitor alliance and happiness. The study assumed that there are some significant positive correlations among the aspects of safety, community, respect and self-actualization, and it shows that it is necessary to install the street monitor. However, for the aspects of privacy violation as well as stalk information leakage, it was significantly lower degree of positive correlation, indicating the doubtful attitude of public for installation monitor. Therefore, the study infers there might be some impact on personal privacy, so it is necessary to set up stricter management practices on the use of information to alleviate people¡¦s concerns and to prevent people from human rights with law. Within this study, it explains the overall sense of happiness for 72.1%. Maslow's theory is closely linked with the public safety protection measures in life, and it is a practical application. As a result, it proposed the follow-up researchers to delve into the effect of monitor, especially on crime prevention.