The compilation of the new generation of the “Five-in-One” metallogenic regularity map represents a core innovation in China’s Mineral Geological Records project. It aims to systematically and standardizedly express the five key attributes of ore deposits—mineral type, deposit type, scale, metallogenic epoch, and affiliated deposit-metallogenic series—through a well-structured symbolic system. The design follows a hierarchical and progressive principle: A foundational three-in-one legend is first established, using geometric shapes to represent deposit types, size to indicate deposit scale, and color or pattern to denote commodity type. This basic legend is applicable to mineral geological maps. A colored ring is then added to represent the metallogenic epoch. Finally, affiliation with a specific deposit-metallogenic series is indicated through marginal annotations and unique symbols, completing the “Five-in-One” legend tailored for metallogenic regularity maps. This legend system is supported by a unified classification scheme covering 182 mineral types, refining and standardizing the representation methods for metallic, non-metallic, energy, and hydro-gas resources, with particular attention to the symbolic notation of special minerals such as gemstones and jades. The design emphasizes the importance of host rocks in deposit classification and exploration applications, ensuring the legend is both scientifically rigorous and practically applicable. Deposit scale is strictly classified based on cumulative identified resource reserves and visually conveyed through legend size. Metallogenic epochs are represented by peripheral color rings, while affiliation with metallogenic series is linked via specific symbols and codes, clearly illustrating the spatio-temporal distribution patterns and genetic relationships of deposits within regional metallogenic systems. This innovative legend design effectively addresses the challenge of visualizing complex metallogenic information, providing a unified, standardized technical framework for the compilation of national and provincial Mineral Geological Records, as well as for mineral prediction, exploration, and prospecting. It serves as a crucial tool for advancing metallogenic regularity research toward standardization and quantification.