Filter stick composite additive with coffee or cocoa flavor and preparation method and application thereof

The invention discloses a filter stick composite additive with a coffee or cocoa flavor and a preparation method and application thereof. The composite additive is formed by compositing coffee powder or cocoa powder, natural plant powder and a bonder. The preparation method includes adding the coffee powder or the cocoa powder, the natural plant powder and the bonder after being mixed well into water to prepare a pulp, performing spray drying on the obtained pulp to obtain a composite additive, and sieving the composite additive to obtain the filter stick composite additive. By adding the prepared composite additive in a cigarette filter stick, a composite flavor can be released enduringly, and tar reduction and harm reduction of cigarette smoke can be realized. The preparation method is low in cost, simple and quick, and meets requirements of industrial production.