Abstract: Disclosed are a business opportunity information sales system and a method thereof, the system comprising: a lead sales application including a registration unit for temporarily registering a lead, which is product- or service-related business opportunity information for a customer, on the basis of an external input from a lead seller, and a sales unit for receiving as an input of a purchase request for a purchase lead among at least one predetermined lead provided from a lead management server, on the basis of an external input from a predetermined lead purchaser; and the lead management server including a registration unit for registering the lead obtained from the lead sales application in a database, and a sales unit for providing the least one predetermined lead in the database to the lead sales application so as to be output to the predetermined lead purchaser.