本文提出宇宙结构元信息论框架(CSMI):宇宙结构的形成本质上是信息在时空中的自涌现过程。我们发现,构成引力场和物质分布的元信息必须满足因果局域性约束——在类空分离的区域间,信息不能瞬时传播。这一简单原理自然解释了观测到的所有结构层次。 元信息涌现链条 (元信息 ← 终极实在),呈现出数学上的优雅美感: 1 元信息本体 → 原初局域性公理 → 信息几何结构 → 对称性破缺涌现 → 基本相互作用 This paper proposes the Cosmic Structure Meta-Information (CSMI) framework: cosmic structure formation is essentially a self-emerging process of information in spacetime. We discover that meta-information constituting gravitational fields and matter distributions must satisfy causal locality constraints—information cannot propagate instantaneously between spacelike separated regions. This simple principle naturally explains all observed structural hierarchies. Meta-information emergence chain (Meta-information ← Ultimate Reality) exhibits mathematical elegance: 1. Meta-information ontology → Primordial locality axiom → Information geometry → Symmetry breaking emergence → Fundamental interactions