The construction of shiology system is the premise for comprehensively solving the issues of human shiance. The core of the construction of shiology system is to reveal the inclusion and juxtaposition relationships within shiance based on a comprehensive understanding of human shiance issues. The shiology system discussed in this paper is a four-level discipline system with the basic structure of shiology triangle composed of eaters' demands， food acquisition and shiance order， and it is currently in the form of "1⁃3⁃13⁃36". From a longitudinal point of view， 53 inclusion relationships are established among disciplines at all levels. Horizontally， 53 juxtapositions are established between disciplines at the same level. The shiology system is bounded by human shiance issues， not involving non-shiance issues areas. Human cognition of shiance and shiance issues must go through three historical stages： fragmented cognition， block-based cognition， and holistic cognition. The construction of the shiology system marks that human have entered the stage of "holistic cognition" of shiance. As the Chinese proverb goes， "food is the paramount necessity of the people." How paramount food for people's necessity. Shiology system interprets its connotation and extension. To solve shiance issues holistically， we need to ensure food security， enable people to eat healthy， and foster an enduring and stable society. And shiology system is a global public product which comprehensively solves shiance issues.