The key of rice keeping-fresh packaging technology is to control and adjust oxygen and carbon dioxide concentration in the packaging. The gas permeability of packaging material is the main factor to adjust gas concentration within the packaging. A new method of calculating dynamic permeability of packaging material was put forward by integrating cross-cutting dynamic processes of rice respiration and film permeability. The water contents, fatty acid, reducing sugar and viscosity of rice under different vacuum degree and fresh-keeping time were tested in the experiment. The result showed that shelf life of rice is more than 180 days.