As a carrier of cultural communication, the development and creative optimization of art and design products have become the key to enhance the tourism experience. The study applies the principle of genetic algorithm to realize the specific technical route of brainstorming method of art design product development process in cultural tourism industry, and establishes the product development process model based on genetic algorithm. Using CBD technology, the design DNA elements related to product modeling are divided into five aspects: function, behavior, culture, emotion and construction method. The adaptive function of genetic algorithm is used to carry out the local optimal solution for these five aspects first, and then the overall optimal solution. Take the development of Qiantang River tourism cultural and creative products as an example. The product development process model based on genetic algorithm requires only 933h and 1.33 million yuan to develop 30 cultural and creative products, which effectively saves the development time and cost. After using the adaptive function for creative optimization, the development time, development cost and change risk are stabilized after 17, 15 and 23 iterations, respectively, which indicates that the algorithm has a good convergence effect. The products designed under the method of this paper received high evaluation.