The utility model discloses an insulating multiplexer utensil withstand voltage test platform, including load -bearing platform with to its support framework that form to support and can walk, load -bearing platform one end is provided with the high -pressure connecting piece that is used for connecting high voltage power supply and forms the high -pressure side, and one end is provided with the ground joint spare that is used for ground connection and forms the earthing terminal, and load -bearing platform is last to be corresponded earthing terminal and high -pressure side at least and be provided with one respectively and be used for that card is solid to be installed by the test piece and realize electrical connection's card firmware, and each blocks corresponding at least one draw -ingroove that is provided with on firmware, test platform is still including connecting in the load -bearing platform earthing terminal and being used for carried out the leakage current monitor cell that monitors by examination article current signal, can realize the withstand voltage test to different model insulator spindles and electroscope to can realize being tried article electrical connection fast, real -time gather by examination article current signal come further to differentiate by the examination article qualifiedly whether, propulsion test platform's intelligent mode, and can realize foldingly and expand function, transportable, collection.