Analyzing from angle of logics and linguistics, it can be seen that certain corresponding relations exist between norm, fact and In aspect of norm, law wears structure of the former/the while in aspect of fact it wears structure of legal fact/legal relation. Between former of norm and fact, and between latter of norm and relation, there is an respective corresponding At same time, between former lexical item and constitutive requirements of fact, and between latter lexical item and component elements of relation, a corresponding relation exists respectively. What's more, certain relation exists even between transverse logical necessary relation of former and latter, and that of fact and Such kind of correspondence is decided by presumption and regularity, characters of norms per se. Norms possess presumption or regularity, so law can be distinguished from other isomerism elements. Therefore, it's possible to forcibly kink two facts that are absolutely irrelevant in daily life.