The work aims to fully explore the customer needs and improve the design of the 3D printing pen according to the results of customer needs, to deal with the serious homogeneity of products in the 3D printing pen market. Firstly, existing 3D printing pens on the market were investigated and the basic functions and usage processes of the products were analyzed to obtain the preliminary functional requirements. Secondly, senior users of 3D printing pens and design developers in the industry were invited to participate in a co-creation workshop around user characteristics, product functions, customer pain points, product opportunity points and innovative design, which were further summarized and sorted out as a supplement to functional requirements. Finally, KANO questionnaire research was carried out according to the functional requirements points. The category of each functional requirement was calculated based on the analytical KANO model. Then the effectiveness of the analytical KANO model was verified by the comparing the analytical KANO model with the traditional KANO model. The final design strategies were determined with the functional quality improvement matrix. The attribute classification and design priority of each functional requirement of the 3D printing pen were obtained. The design strategies for user needs of the 3D printing pen were proposed, and the design practice and evaluation were completed. The method of co-creation workshop is used to improve the functional requirements acquisition of the 3D printing pen, and the analytical KANO model is used to classify and rank the functional attributes, so as to translate user needs into design strategies, providing new ideas and methods for enterprises to design and develop similar products in the future.