Usada Taru Pramana is a record of hundreds medicinal plants. Researcher is interested to know the knowledge level of Pemogan Villager about Usada Taru Pramana and its influence on the utilization behavior and conservation of herbal medicine. Data were collected using a valid and reliable structured questionnaire with a cross-sectional survey design. According to Spearman's test result from total 150 samples, Pemogan Villager knowledge about Usada Taru Pramana is not correlated with the utilization behavior and conservation of herbal medicine (P value=0,280 and r=0,089). There were no significant differences between the both variables with respondents' education level, age and gender. The results showed that the factor which influenced the studied variables is very complex. There were "aja wera" belief in Balinese society, which means that the general public is prohibited from learning directly from the Lontar. Pemogan Villager also hampered by the scarcity of land and medicinal plants around them.