The purpose of this study is to investigate the level and type of interest in environmental problems and the relationships between these factors and the background characteristics of Thai population. The data used are from the project entitled “Report the social attitude of population survey 1993 " which was conducted by the National Statistical Office. The sample includes 22,899 households. Results from bivariate analysis indicated sex, age, marital status, education, occupation, incomes of household, area of residence, region and experience with pollution problems have statistically significant association with the level of interest in environmental problems. When Controlling for some background variables, the results also revealed that sex, age, marital status, education, occupation, incomes of household, area of residence, region and experience with pollution problems still have strong relationship with the level of interest in environmental problems. Results of the study also indicated that factors which are significantly related to the type of interest in environmental problems among are sex, age, marital status, education, occupation, incomes of household, area of residence and region. However, when controlling for some background variables, the results showed that only education, occupation, incomes of household, area of residence and region have statistically significant on the type of interest in environmental problems.