As a new and effective testing cite for electromagnetic compatibility test, the reverberation chamber, especially a newly built one, must verify its field uniformity. So, when undertaking a study on a reverberation chamber, its field uniformity is a key indicator. This article, in accordance with the actual dimension of a reverberation chamber, built an FEKO model, and calculated the electric field of the 8 vertices of the workspace, then verified the field uniformity of this reverberation chamber meet the IEC 61000-4-21 standard.