<p>Provided are a system and a method for supporting sales. The system for supporting sales according to an embodiment of the present invention includes: an event management unit generating and managing sales-related event information based on open request information received from a first client; a matching determination unit determining whether or not approval request information and the event information received from a second client to generate matching information; and a preoccupancy information management unit generating first preoccupancy information if the matching is determined to grant the first preoccupancy information to the event information.</p>
