A statistically uniform E-field can be created in a reverberation chamber by frequency stirring.The statistical properties of frequency stirring reverberation chamber in over-moded are analyzed,and the ideal probability density functions(PDF)of E-field and field power are presented.In order to verify the statistical model,the S21 parameter which is the normalized power is measured between transmitting and receiving antenna.The result of the examination and processed data shows that the histogram of S21 can be good agreement with the theoretical model when the number of sample is enough.