Among the main aging factors faced by composite insulation materials in power equipment, corona aging has a high probability of occurrence and great harm. It is necessary to conduct research on the performance change trend of composite insulation materials through artificial corona tests. However, the existing corona aging electrodes have low efficiency and poor uniformity, which cannot meet the long-term aging needs of materials. This article mainly uses electric field simulation as the main method to design and build a corona aging test platform for insulation materials by changing variables such as multi needle arrangement, needle plate spacing, needle horizontal spacing, and needle vertical spacing. The characterization of silicone rubber materials after corona aging was carried out using FTIR and water contact angle. The experimental results showed that the physical and chemical properties of the artificially corona aged samples were consistent with the actual returned products, and the insulation material corona aging platform built had high efficiency, uniformity, and stability.