Multifunctional vertical packing machine was used to heat-seal the vegetable composite paper. Through single factor test, the heat-sealing temperature range of vegetable composite paper was determined. The heat sealing performance of soy protein-fennel and celery composite paper were studied under different temperatures. The results indicated that the heat sealing temperature of the celery based vegetable composite paper should be lower than 105℃below by using heat roller device for heat-sealing; heat sealing performance of soy protein-celery composite paper is significantly superior to the soy protein-fennel composite papers; the average heat sealing strength of the former is generally 3. 245 times as that of the latter.