Objective: In order to explore a method to preserve the human genomic that stored at room temperature, and convenient transportation to laboratory for the studies of DNA anal.Method: With sealing film and without sealing film is divided into two groups, each group of samples stored at room temperature determined the concentration, integrity and residual volume on the 0, 6, 10, 14, 18, 20, 22 and 24 days.Result: With the preservation time increasing, the concentration of DNA Saved in silica film is increased when the volume is decreased, the purity of DNA doesn't change significantly, The DNA is degraded in tenth days, is Severely degraded in twenty-fourth days.The remaining volume of the group without sealing film is lower than the min. value on the twentieth day; the remaining volume of the group with sealing film is lower than the min. value on the twenty-fourth day.Conclusion: The conclusion is that DNA stored in the silica film can be stored for at least 24 days at room temperature