The political behavioral approach has become the mainstream in political science since World War II. The main characteristics of this approach are: (1)regarding political behavior as the unit of analysis, (2)using scientific methods to study politics, (3)trying to construct a general theory of political science, and (4)applying other discipline’s methods and theories. This paper uses the behavioral approach to study the political attitudes and five forms of political participation. The six kinds of political attitudes are democratic attitude, political efficacy, sense of citizen duty, political cynicism, political alienation and political competence. The five forms of political participation are voting behavior, political informative behavior, group activity, contact with officials, and political party activity. The statistical methods used in this paper include Person simple correlation, partial correlation, multiple correlation, and multiple linear regression. The main findings of this paper are as follows: (1)There are significant positive correlations. (2)There are significant positive correlations between political competence and five forms of political participation. (3)There are less correlations between sense of citizen duty and five forms of political participation. (4)Less than 15 percent of the variation in each form of political participation is explained by linear regression on the six kinds of political attitudes. Political attitudes are only one of the factors that influence political participation. For the comprehension of political participation, we must purse further study of the other factors, such as political structure, economic setting, political culture, and political personality.