This study aims to clarify the characteristics of risk perception and understanding of volcanic phenomena among the residents of Mt. Fuji. To this end, we conducted a questionnaire survey of residents in the foot area of Mt. Fuji. As a result, the following three findings were obtained. Firstly, the scale of the disaster that residents envisioned for the next eruption of Mt. Fuji was comparable to the Hoei eruption, which caused ash fall damage over a wide area. Secondly, 40-60% of the residents do not correctly recognize the risk of volcanic disasters in their homes. At last, it is difficult for residents to accurately understand the diverse volcanic phenomena that may occur during the Mt. Fuji eruption.