We surveyed the high frequency word "Da(大)" in Mandarin Chinese with a cognitive semantic view. Firstly, we discussed the meaning of "Da(大)" in "Modern Chinese Dictionary", and then we also explored its quantitive properties which are divided into two types e.g. fixed quantum & unfixed quantum, which make different syntactic distributions in using "Da(大)". we also discussed the meta-linguistic function of "Da(大)" to other dimension adjectives. Finally we discussed semantic network of "Da(大)" made by metaphor and compared the syntactical function between "Da(大)" and "Duo(多)". Through our research, we reached the conclusion that the more frequent use of "Da" than "Duo(多)" reflects on Chinese people`s linguistic expressions of their spatial thinking method, which are different from Korean`s.