One of the methods to solve the regional decline is the use of vacant houses. In this paper, I will focus on the relationship of the vacant house and the migrants, and target Kyonan Town which has beautiful scenery and good access to Tokyo. First, I will understand the problem of the vacant house in Japan. Next, I will understand the problem of the vacant house in Kyonan Town. Through interviews with people who live in Kyonan Town and the migrants who live in Kyonan Town, I will understand problems which Kyonan Town has.