This article focuses on the digital transformation of enterprises, introducing the design methods of enterprise architecture, including the structure and design of various components of enterprise architecture. It proposes an overall framework for enterprise digital transformation, including transformation goals and methods. The goals of enterprise digital transformation include management refinement, product differentiation, decision-making scientization, and customer experience personalization. The transformation methods include diagnosing enterprise digitalization issues, coordinating the planning of enterprise digitalization resources, and enhancing the level of enterprise data governance capability, as well as transformation capability evaluation. The transformation capability evaluation includes designing a transformation capability level matrix, categorizing digital transformation capability levels, and establishing a comprehensive self-evaluation mechanism for transformation capability levels. Through these efforts, enterprises can achieve their digital transformation goals, enhance competitiveness, and achieve high-quality development.