Germ-left rice contains a large amount of nutritional ingredients, but its quality degradation easily occurs. In order to improve the storage quality of germ-left rice, the effects of several packing material and storage parameters on storage time of germ-left rice were investigated. Microwave intensity, gas regulating mode and ambient temperature were selected as influencing parameters, and critical storage duration (responding to fat acid content of 35 mg KOH/100 g DB in germ-left rice) as the indicator on quality evaluation. Response surface methodology was used to analyze the effect regulation of storage parameters on the storage time of the germ-left rice，to obtain the optimal parameters of the storage control. Results showed that the storage time of transparent plastic bag and aluminum foil bag packaging germ-left rice were basically the same, which were both longer storage duration than the paper bag packing. The influence degree of the factors affect the storage time: ambient temperature>gas regulating mode>microwave intensity. The critical storage duration extend with the increase of microwave intensity and CO₂ content and the decrease of the ambient temperature. Optimal storage conditions were developed as microwave intensity of 500 J/g, the content ratio of N₂ and CO₂ of 3070, the ambient temperature of 3 ℃ to achieve the highest storage duration of 374 d.