The invention discloses an intelligent transformer station telemechanical system test device based on a telemechanical system CID. Test cases are generated by parsing telemechanical CID files generated by a concrete engineering, test case configuration of the test system is automatically accomplished; the formed test cases are utilized to carry out automatic tests on alarm signals of the telemechanical system; further through KVM, frames of a centralized control station is read, artificial auxiliary evaluation on each telemechanical alarm signal test result is carried out, test record files of the telemechanical alarm information are established, and engineering management is realized. The telemechanical system test device can form a real-time artificial auxiliary closed-loop high-efficiency test system, provides necessary conditions for rapid tests on intelligent transformer stations and improves the construction speed of the transformer station.