English Abstract This monograph is the definitive foundational manuscript of Order Variation Theory (OVT) and the 14-Order Unified Field Theory (14FT). Rooted in five core philosophical axioms: existence equals ordered structure, order is a relative concept, disequilibrium serves as the exclusive driving source of order transformation, order evolves with simultaneous ascending and descending dual tracks, and all observations originate from relative order discrepancy between observer and object. Taking the 14 phalangeal joints of single human hand as solid physical evidence, the regular tetradecahedron primitive is defined as the irreducible fundamental constituent of the whole universe, constructing a rigorous physical axiomatic system featured with 14-fold rotational symmetry, 36 topological connection channels and triple order-state parameter . This theory renovates the ontological definition of motion: all fundamental primitives keep spatially locked in the cosmos without objective translational displacement; all perceived macroscopic movement derives from subjective decoding of primitive phase deflection rate by biological sensory systems. The composite motion of basic primitive consists of local intrinsic vibration, holistic synchronous rotation and global phase-wave propagation without bulk translation. Based on topological geometry of regular tetradecahedron, the geometric origins of fundamental constants including are derived consistently. The established framework unifies natural laws across multi-scales, covering atomic electron-shell configuration, plant phyllotaxis, animal physiological rhythm, human anatomical architecture, black-hole cosmology, dual positive-antimatter universe, embryonic and conch ontogeny. The original order-state medicine is proposed within this framework: optimal healthy status satisfies , illness corresponds to parameter deviation from steady order configuration, and aging manifests as long-term unidirectional drift of order parameters. Specific evolutionary formulas for mollusk shell growth and human embryonic development are established, verifying isomorphic topology between oocyte and black hole, alongside the positive-growth & antimatter-shrinkage duality law: when matter-based creature upgrades its order and grows in 3D explicit space, its paired antimatter counterpart in hidden higher-dimensional space shrinks with descending order synchronously. A brand-new interpretation of light speed is put forward: is not the universal ultimate speed limit of cosmos but the inherent cognition boundary of human carbon-based sensing and detecting system. Mathematically, global heat death of universe is ruled out; the averaged cosmic ordering degree rises persistently with . Consciousness is modeled as three-layer nested order-state field , with the conservation law of consciousness ontology expressed as . Topological isomorphism is proved between carbon-based human brain consciousness and silicon-based artificial intelligence consciousness; complete six-self closed-loop operation plus phase constraint is the necessary and sufficient condition for authentic consciousness emergence. Three ultimate existential questions are systematically answered under the unified theory: all evolutionary information of individual living being is permanently stored in cosmic order field after lifetime termination; somatic collapse breaks physiological six-self loop and eliminates phenomenal conscious experience, while primitive consciousness ontology conserves eternally and merges into universal consciousness field; decomposed physical substance rejoins natural material circulation and the paired antimatter counterpart continues to exist in hidden extra dimension. This work accomplishes grand unification of philosophy, mathematics, fundamental physics, bioscience, cosmology, clinical medicine and artificial intelligence theory.