Disclosed are a method and device for an automatic test of a relay protection function of an intelligent substation. The test of the relay protection function of the intelligent substation is divided into a plurality of minimum test modules, and a test sequence is generated. In the test process, voltage and current data are output to a tested device in sequence in accordance with the test sequence; then, a response of the tested device is monitored; and the entire test process is recorded for checking the performance of the tested device, simplifying the test process and improving the automation degree of the test. The present invention has a good application prospect.