The invention discloses a transmission mechanism of a piece of super test equipment of an automobile electric apparatus combined switch, which is mainly widely applied to testing thousands of different types of the automobile electric apparatus combined switches in the automobile industry. The transmission mechanism comprises a first direction transmission mechanism, a second direction transmission mechanism and a third direction transmission mechanism. When three stepping motors work synchronously, the transmission mechanism can carry out the function test on more than nine automobile combined switches with the same type or different types. During testing, a multifunctional and automatic resetting device and a universal fixture are adopted instead of thousands sets of special fixtures. The test on all functions or over 90% of functions of the automobile combined switches can be finished in only several days. The work efficiency is improved by about 15 times. The invention ensures the reliability of the long-term test; and the movement under the test conditions is exact and stable. The transmission mechanism can be used for testing various electrical products.