The invention discloses a parametric architectural design method based on design logic, which includes steps: S1, customizing component standards; S2, making basic unit components; S3, assembling standardized units; S4, forming a parametric modular component library; S5, selecting and composing the standardized units; S6, adjusting design parameters according to the program; S7, outputting design results; S8, storing split units. The parametric architectural design method based on the design logic splits design elements into basic unit components. Through benchmark model driven by parameterization in Revit and each unit component according to certain design logic carrying on relation locking, parameter driving a benchmark model, the benchmark model driving unit components and the goal of the integration, collaboration, intellectualization and digitization can be achieved, and design efficiency and quality can be improved. Using the parametric architectural design method based on design logic, the design can be productized to some extent. Through freely assembling mature module components to finish designing products, the balance between quality and efficiency can be achieved, and the duplication of labor and waste can be reduced.