Disclosed are an information interaction method and an information interaction system, using at least two electronic cigarettes for information interaction. The method comprises the following steps: S1. at least one electronic cigarette in a preset distance sends taste information carrying a tobacco tar taste type and a taste comment to one or more other electronic cigarettes in the area; and S2. An electronic cigarette receiving the taste information saves, generates a prompt of, and/or forwards the taste information. By using the method of the present invention, tobacco tar taste information is shared, favorite tastes can be recommended between each other and disfavor tastes can also be provided for others as reference information.