The invention discloses an intelligent substation local relay protection test system comprising a password device, a relay protection tester, a switch, and a local control terminal. The output end of the password device is connected with the start end of the local control terminal. A first output end of the local control terminal is connected with the switch to issue a test start instruction. The relay protection tester is arranged inside an intelligent substation, the enable end of the relay protection tester is connected with the first output end of the local control terminal through the switch to receive the test start instruction issued by the local control terminal, multiple output ends of the relay protection tester are connected with the test interfaces of multiple protection devices in the intelligent substation through optical fibers in a one-to-one correspondence manner, and the input end of the relay protection tester is connected with the network interfaces of the multiple protection devices through the switch to identify the protection devices under test. Through the technical scheme, the safety of protection device test is improved, and the test efficiency is improved.