The invention discloses an insulator damage test platform. The platform is used for solving the technical problem that equipment which can simulate the actual working environment of a GIS insulator and conduct damage test research on the GIS insulator does not exist in the prior art. A test insulator is fixedly arranged in a GIS metal cavity through a high-voltage guide rod, impact voltage generated by an impact voltage generator is applied to the test insulator through the high-voltage guide rod, and the real environment in which the test insulator is subjected to the impact voltage is simulated; besides, an image collector is installed on the outer side of the GIS metal cavity and used for collecting and recording the process that the test insulator is subjected to the impact voltage andflashover occurs, and the platform is convenient for engineering operation and maintenance personnel to analyze and evaluate the impact resistance and insulation capability of the test insulator.