The invention discloses an intelligent GIS partial discharge IED test loop and method, and the test loop comprises a partial discharge signal generator, a partial discharge IED probe, a coupling capacitor Ck, a coupling device CD, a partial discharge measurement system MI, and a test power supply U. The high-voltage end of the test power supply U is connected with the coupling capacitor Ck and the coupling device CD, and the other end of the coupling device CD is connected with the lower end of the test power supply U and is also grounded. The partial discharge measurement system MI is connected with the coupling device CD. The high-voltage end of the test power supply U is connected with one end of a bus passing through a GIS housing, and the GIS hosing is grounded. The partial discharge IED probe stretches into the GIS housing, and a signal transmitting end of the partial discharge signal generator stretches into the GIS housing, and is used for generating a partial discharge signal. The test loop is simple. Only if a hand-window type discharge gap is made on an intelligent GIS housing, can the test loop achieve the purposes of improving the partial discharge voltage, improving the testing efficiency and protecting the environment.