Based on the design psychology, this paper explores the emotional design rules, methods and thoughts of cultural and creative products in museums. Through analyzing the influence of emotional elements on the design of cultural and creative products in museums, the internal relationship between emotional elements and the design of museum cultural and creative products is pointed out. Through analyzing the emotional design rules of the cultural and creative products in current museums, on the basis of the emotional design level consisting of "instinct level, behavior level and reflection level", combined with the specific characteristics of cultural and creative products in museums, the emotional elements are obtained through induction and analysis, and the divergent emotional elements are summarized into design ideas. In this case, the emotional application mode of cultural and creative products in museums is concluded, as well as the methods and strategies of applying emotional elements to the design of museum cultural and creative products. Besides, they are verified through practical applications. Through the emotional design thought proposed in the paper for museum cultural and creative products with its practical application, the emotional value and cultural value of museum cultural and creative products can be improved.