Abstract: Food controlled-release system is based on packaging materials as a delivery system for the controlled release of active substances, which can realize the maintenance and improvement of food quality. In this article, the lasted advances in the application of controlled-release technology in active food packaging and in research into the release mechanism and factors affecting the release rate are reviewed. Moreover, the future development trend of controlled-release technology is also proposed.

Key words: controlled release, food, active packaging, diffusion