Abstract: The paper is to integrate the cultural gene of 24 solar terms into the digital design, improve the participation and positivity of users, expand the scope and speed up the speed of its transmission, so as to achieve better protection and inheritance of the 24 solar terms culture. Through perceptual analysis and shape grammar, after deep analysis, we extract the connotation,  color and morphological genes of the 24 solar terms and design solar term culture gene in combination with digital technology. The existing solar digital products are scored by the Likert five-point scale method. By comparing and analyzing each measurement index, the solar energy design example “Jie Qi Baby” is  evaluated. This idea not only saves the cost of intangible cultural heritage protection, but also achieves the best protection effect, which provides a new reference for the protection of other intangible cultural heritage.
 

Key words: culture gene, digitization, CAD, intangible cultural heritage