The invention relates to a transformer station main wiring diagram and intelligent alarm test case visualization automatic association method; the method is featured by comprising the following steps:1, instantiating transformer station SCD files and a transformer station fault template according to transformer station real interval information; 2, automatically associating the instantiation testcase files with each internal of the main wiring diagram according to the voltage class, primary device description, IEDName and IEDDesc information of the internal of the main wiring diagram; 3, selecting certain interval on the main wiring diagram, consulting all intelligent alarm test cases related to the interval and selecting a to-be-tested test case, and carrying out norm tests for the intelligent alarm functions of an integrated monitoring system. The method can effectively improve the testing efficiency of the intelligent alarms.