A product pushing method and a product promotion system are provided. The method includes the following steps: recording an area as the user's current position when the time period of the user staying in the area is longer than a first threshold; obtaining at least one current product corresponding to the current position from a regional product database; obtaining at least one recorded product corresponding to at least one recorded position from the regional product database; obtaining at least one promotion portfolio from the product portfolio database according to the current product and the at least one record product; and sending the at least one promotion portfolio to the user.