PROBLEM TO BE SOLVED : To provide a monthly contract lease article promotion system which manages monthly contract lease information offered from plural real estate agents or owners unitarily.SOLUTION : This system is composed of a headquarters side server 10; having a lease articles database 22, a common fixtures database 23, a member contractors database 24 and a tenants database 25, and also a transmitting and receiving means 11, an input and output means 14, a storage means 15, an ID inparting means 16, an information check means 17, an information selection means 18, and an information renewal means 19; moving-in candidates side information terminals 50, agents side information terminals 30, and information memory media 70a, 70b storing video information and the page URL of headquarters side server beforehand : this system, while managing the monthly contract lease articles information offered from the plural agents unitarily at the headquarters side and performing moving-in reservation applications, moving-in reservations, and moving-in contracts by disclosing the things information through Internet, on the other hand, manages the fixtures information offered from the plural agents unitarily at the headquarters side and attains the common utilization of fixtures among the agents.