The objective of this research study was to examine the basic knowledge of Thais within the country about Thai herbs, and their learning about Thai herbs. The researchers distributed 900 tests and questionnaires to the sample group interested in Thai herbs, in the northern, northeastern, central, and southern regions. Tool used in the study is a test evaluating knowledge of Thai herbs, their natural healing property, and applications. The other was a questionnaire designed to examine the participants in applying Thai herbs and in learning about them. The statistical data analyses were percentage, mean, standard deviation, t-test and ANOVA. The results of the study showed that 97% of could identify Thai herbs, 61% knew their healing property, and 70% knew how to use them. Bachelor's degree gain higher scores than Senior high school and Undergraduates' Student on identify of Thai and applications of Thai herbs