This study investigated how much Thai learners of Japanese know about and are conscious of Japanese accent when producing speech. Through the questionnaire and the follow-up interview, it was found that the Thai learners of Japanese can be categorized into three types: 1) Learners who know nothing about and are not conscious of the accent, 2) Learners who have some basic knowledge but are not conscious of the accent when producing speech, 3) Learners who have some basic knowledge and are conscious of the accent when producing speech, though the levels of their knowledge and consciousness are both not enough. There are different tendencies among these three types of learners in the way of producing the accent.