To reduce costs of a market research and to provide a statistic result to a developer promptly.

A product development supporting device is provided with an opinion gathering part 26 for gathering opinions regarding a pet 14 and regarding an automobile 13 from a user terminal 4, a pet site 24 for publicizing an electronic bulletin board 92 carrying the opinions, a key word data base 23 for recording a key word 61 regarding the pet 14 and developer terminals 5 and 6 belonging to the developers 15 and 16 developing the automobile 13 in correspondence, a statistic part for counting a number of the opinions including the key word 61, a developer extraction part 28 for referring to the key word data base 23 and extracting the developer terminals 5 and 6 corresponding to the key word 61 whose number exceeds a prescribed value, and a statistic distribution part 29 for distributing the number of the key word 61 to the developer terminals 5 and 6 extracted by the developer extraction part 28.