Air-drying methods vary in different districts.Effects of six different trentments of air-drying on relative physical quality of japorica rice at maturity was stutied.The results indicated that the temperature was an important fator to effect milling and appearance quality of rice.The percentage of head milled rice was descended with high temperature,but the percentage of chalky rice was increased.The temperature of air-drying methods was not too high.The best way of air-drying methods was to dry in the ventilation and low humidity condition.