Gather new smart technology paradigm and empower new design philosophy. The technological wave of applying artificial intelligence (AI) to art design has led to the phenomenon of emphasizing "technology" over "theory", which requires both "skill" and "Taoism" to evaluate the fields from which AI design research should be carried out, and explore its "matter" and "philosophy". By taking clothing design as the medium of discussion and integrating the interdisciplinary research methods of philosophy, economy, science and art, an in-depth basis is proposed to solve the AI clothing design from the philosophy of domain ontology and extension episteme positioning as well as technology method positioning. Then, the philosophical normative research route of cognitive AI clothing design is opened from the inside of "matterology" and the ontology definition and cognitive approach of AI clothing design research are put forward. This research answers the question of "what and how" in AI clothing design from the relevant dimension of philosophical thinking, and puts forward the way to construct the theoretical system of AI design. It provides a methodological basis for designers and data engineers to cooperate in human-machine integration design and answers the philosophical question of "how" in AI clothing design from a technological route perspective.