Taking the Hesheng Bridge as the prototype, a health-diagnosis-oriented concrete cable-stayed model bridge was designed and made with a scale of 1∶15 based on similarity theory, problems and solutions were analyzed in model design process. The initial finite element model(FEM) of prototype and model bridge were established and the baseline FEM were computed after model updating. The static and dynamic characteristic similarity of the model and prototype bridge was analyzed at undamaged and damage states. The results show that after a variety of simplifications and treatments, the static and dynamic characteristic and damage characteristic of model and prototype bridge still have a good similarity. The method can provide a reference for the model design of concrete cable stayed bridge.