Abstract: The moisture content (m.c.) and mildew of dry peanut pod (nearly 6% m.c.) were measured under different temperatures and relative humidities during storage. At 70% RH, m.c. of the peanut pod increased to 9.18% at 20 ℃ after 14 days. At 25 ℃, m.c. was 8.47% after 15 days. At 30 ℃, m.c. was 7.95% after 14 days. No mildew appeared under these conditions. At 80% RH, m.c. increased to 10.21% at 20 ℃ after 10 days, and then reached 11.27% after another 4 days and mildew appeared. At 25 ℃, m.c. increased to 9.82% and mildew appeared after 13 days. At 30 ℃, m.c. reached 9.50% m.c. and mildew appeared after 13 days. At 90%RH, m.c. increased to 10.44% after 5 days and then increased to 12.75%after another 3 days and mildew could be observed. At 25 ℃, m.c. increased to 10.28% after 5 days, and then to 10.71% after another 2 days and mildew appeared. At 30 ℃, m.c. increased to 9.54% after 7 days and mildew appeared. In conclusion, under the same humidity, m.c. of peanut pod decreased with the increase of temperature. At 20~30 ℃, no mildew appeared when RH was 70% and m.c. was not higher than 10%. M.c. increased rapidly and mildew appeared when RH was 80% within two weeks. When RH was 90%, mildew appeared after 8 days. Therefore, the relative humidity of dry peanut pod during storage should not exceed 70% RH when the temperature is higher than 20 ℃.