The purpose of this study were to make a comparison with the level of environmental consciousness between the livestock farmer and the reference groups( peasant, office worker, housewife and student) and to identify the variables which have an influence on the level of their role performance for environmental protection & preservation. Data for this study were collected from 822 cases including the livestock farmer(109), the peasant(67), the office worker(140), the housewife(119) and the student(356). The SPSS software program and statistics such as frequencies, x2, ANOVA, multiple regression analysis, Chronbach's α and factor analysis were used to analyze the data for this study. The major findings of this study were as follows: 1. The pro-environmental attitude score(environmental sensitivity and attitude of environmental protection & preservation) the groups of office worker and housewife is shown higher than the groups of livestock farmer, peasant and student. 2. The consciousness of environmental problem is relatively low to the group of the livestock farmer compared with the reference groups. 3. As a result of multiple regression analysis, four determinants such as locus of control, lifestyle, environmental sensitivity, and knowledge of environmental issues explained 38.8% of the livestock farmer's role performance for the environmental protection & preservation.