The invention discloses functional cigarette lap adhesive, which comprises preparing powder which can pass through a sieve with 120-150 orders after cleaning, drying, wet steaming, drying with steam,and grinding a root or a tuber or a bulb or a bulbodium of plant and then evenly mixing the powder with existing cigarette lap adhesive according to the adding proportion of 0.01%-0.1%. The functionalcigarette lap adhesive is applied in existing cigarette products and can effectively improve absorbing odor, increase the comfortableness of suction, and make the personality and the characteristicsof the product clear, simultaneously the invention can pertinently remove free radical in cigarette smoke and increase the safety of the cigarette. The product is environmental friendly and can be degraded to achieve 'zero discharge'.