The new curtain wall project of Henan Science and Technology Museum is a double-layer curved special-shaped curtain wall, the outer curtain wall is light and flexible, and the inner curtain wall is complex and changeable. GuiBiao tower is a distorted rising special-shaped tower. The size modeling of the outer flipped plate of the curtain wall of the project presents a gradual discrete distribution, and the inner steel structure is a complex twisted surface. The construction is difficult because it contains many technical schemes. Through the application of parametric BIM Technology, the overall appearance effect, design scheme and construction technical problems of the building are being perfectly solved, not only the design efficiency of the curtain wall is being greatly improved but also the appearance of the project is being ensured.