Abstract: Test of electric specifications is very important in developing radome. Now the highest frequency of rodome testreaches up to Ka band, while W band test is still not available. The paper firstly gives a brief introduction to the electricspecifications and test method of the radome. In terms of insufficiency of test instrument on W band, the paper proposes a testmethod which takes use of seeker’s RF receiving component as test system’s receiver, realizing radome test on W band. Based onthis method, practical test results are provided. It’s herefore verified that the proposed test method is applicable with testprecision meet the requirements, which eases the tension of instruments import on W band.