Hakka earth buildings are rich and unique in shape and distinctive in character. The work aims to analyze and extract the core elements of Hakka earth buildings, inherit and apply them to modern wooden assembled toys, introduce new ideas and show the power of innovation. Integrating the essence of Hakka earth buildings into the design of wooden assembled toys can revitalize traditional culture and create new products that integrate education, entertainment, and safety. With shape grammar and ABAQUS as tools, Hakka earth buildings as the analysis object, and wooden assembled products as the design object, unique and safe wooden assembled products were created. Through in-depth analysis on the characteristics of traditional Hakka earth buildings, the unique shape and decorative elements were extracted and integrated into the design, and then the rationality of the prefabricated structure was verified, ultimately forming a unique and charming design result. Shape grammar is used to deduce the characteristic elements of Hakka earth building culture, ensuring that the appearance of wooden assembled toys not only has the physical characteristics of Hakka earth building elements, but also conforms to modern aesthetic characteristics. The ABAQUS is then used to conduct mechanical testing on the assembled structure to verify the safety and security of the assembled product. This study has achieved the purpose of inheriting and innovating regional culture.