Traditional Chinese ink painting occupies an important position in the history of world art with its unique artistic conception and brushwork techniques. How to inherit and innovate this art form in the digital age is a key issue in the combination of contemporary art and technology. This paper explores the generation technology and application of three-dimensional ink animation by studying the expression techniques and aesthetic characteristics of traditional ink painting. We first analyzed the core artistic elements of ink painting, such as “combination of virtual and real”, “white space”, and “layering”. Then, based on three-dimensional modeling, physical simulation and non-photorealistic rendering technology (NPR), a generation framework of three-dimensional ink animation was proposed. Through this framework, not only can the brushstroke effect and fluidity of traditional ink painting be effectively reproduced, but also multi-angle dynamic display can be achieved, which enhances the expressiveness and visual impact of ink art. The study shows that three-dimensional ink animation is not only a continuation of traditional ink art, but also an innovative expression form in the modern digital media environment, which provides new possibilities for the digital protection of cultural heritage and artistic creation.