The invention relates to the technical field of vibration test, and specifically relates to a vibration test system with static preloading. The invention aims to solve the problem that the existing vibration test system with static preloading cannot realize the static load condition, and increases the burden on the vibration table. The vibration test system is characterized in that the system comprises a support component, a static force and vibration loading component, and a static force and vibration loading control system; the static force and vibration loading component is disposed inside the support component, and is fixedly connected with the support component; the static force and vibration loading control system is fixedly connected to the static force and vibration loading component; and the support component is used for supporting a test piece, the static force and vibration loading component is used for preloading static force and loading vibration on a test piece, and the static force and vibration loading control system is used for controlling the static force and vibration loading component. According to the invention, a flexible boundary is provided through deformation of a flexible device, and the correctness of vibration test is ensured.