Generally regarded as a verb-complement phrase, compound directional construction “V₁+V₂+來/去” is the important and difficult point in TCSL. In terms of historical origin and the grammaticalization of directional verbs, compound directional constructions consist of two kinds: phrases and derivative words at present, which can be specifically divided into modification phrases, verb-complement phrases, morphological words and lexical words according to the grammaticalization process. The semantic patterns are composed of “the way + the tendency movement, the path + tendency result, the root + tense-aspect affix, the root + the modal affix (means estimation )”. The four natures are mainly correspondent to the four different structures in Korean language: “V₁-아/어（서）V₂+오다/가다”, “V₁-고 V₂+오다/가다”or“V₁ (-었다)”, “V₁ (-었다)” or “V₁+보조동사”, “V₁-니/기에”. The establishment of the corresponding relationship not only provides a cross linguistic basis for the category of nature, but also contributes to TCSL.