A laboratory computer platform maintenance device solves a problem that in conventional various engineering experiments and test projects, various test means based on computer technology have no apparatus and device capable of performing functional maintenance on a computer test platform during the test process and is unable to make auxiliary expansion for computer experiments. The laboratory computer platform maintenance device has a reciprocating mobile station to expand the operation surface of a test bench relatively effectively and is freely assembled according to the sites. A self-supporting structure gives the computer test platform more flexible test surface and expansion space and has greater operability. The structure of the explosion-proof support table gives the platform a goodgrounding stability, anti-collision and anti-swaying characteristics. The laboratory computer platform maintenance device can assist various test, measurement and automation applications, and is popularized and applied comprehensively, easy to use, low in manufacturing cost, can easily learn to expand and debug related structures according to self-concept, and is practical.