PURPOSE: A system for automating commercial sphere analysis based on web-map information and an automation method thereof are provided to visually display the dispersion of a commercial sphere of a specific store and display a present state of commercial sphere division between stores. CONSTITUTION: A commercial sphere analyzing server(30) includes the followings. A selection probability calculating module(32) calculates a selection probability of each store in an analysis target area including analysis target stores. Available population calculating modules(35,36) evaluate available population according to a visit rate of population inducing facilities for the analysis target stores. The analysis target stores have a top-ranked selection probability. [Reference numerals] (31) Information extraction function module; (32) Selection probability calculating module; (33) Market setting function module; (34) Visiting rate application module; (35) First available population calculating module; (36) Second available population calculating module; (37) Comparison module; (38) Database
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