PROBLEM TO BE SOLVED : To provide a managing method for a beauty parlor by using a real estate investment system, which increases the proprietary value of an unused land by managing a beauty parlor with a day-care center on the unused land.SOLUTION : This managing method for the beauty parlor by using the real estate investment system, comprises a means for calculating the price of the unused land, a means for divisionally determining the price of the unused land for every year, a means for paying an installment of the price of the unused land to the landowner, a means for paying a specific extra amount in every month in addition to the payment of the installment, and a means for transferring the proprietary right of the land from the landowner to the installment payer once all the installments are paid and is characterized by that the installment payer or a person making a lease contract with the installment payer run the beauty parlor on the unused land.