/kloc-in the 0/7th century, European drama entered the classical period. At that time, France was a unified hierarchical monarchy, and a high degree of centralization needed literature and art to serve it. French drama developed in this political environment has become the banner of classicism. At the same time, the humanistic trend of thought in the European Renaissance also had a far-reaching impact on classical playwrights. Classical drama emphasizes the expression of rationality and humanity. Tragedy and comedy have strict boundaries, so we can't confuse them. We put forward "three unifications" as a structural model.