This paper proposed a training system in the educational model of feasibility study studio considering feedback mechanism based on the learning process and knowledge bank. System dynamic theory was used to analyze information feedback between undergraduates and teachers as well as among undergraduates. Positive feedback stimulates and negative feedback inhibits practical ability improvement in the studio educational model. An initial function with dynamic features was established according to the feedback mechanism, the function’s differential equation was solved to get the general solution. An “S” curve demonstrates the trend of practical ability training performance in educational model of feasibility study studio. The formation process of the “S” curve was explained. At last, some methods running the studio were proposed to elongate positive feedback and improve practical ability training performance in the educational model. This paper established the ability training pattern educational model of feasibility study studio and realized the integration of modules and platforms with theoretical knowledge as the inputs and practical abilities as the outputs.