PROBLEM TO BE SOLVED : To provide a system and store constitution for an electronic real estate property sales promoting method for establishing virtual property checking guidance in a server so that a user can acquire suitable property by his (or her) own image from a terminal by using Internet. SOLUTION : The user retrieves and investigates the body of property and the contents of surrounding states by using a worked map or video data from a camera (video camera) on the basis of the qualitative conditions of retrieval and the property, sufficiently recognizes virtual property check guidance, outputs a property drawing from the terminal, checks the drawing, and then reserves visit to a trader' s office. Then the user visits the office, receives explanation about the contents of the body and the surrounding states which is real property check guidance, checks the guidance of the real property by himself (or herself), and applies the contract of the property. In the case of visiting the office directly, the check of property files and the retrieval of contents in the server can be also performed.