Language plays an important role in the cultural identity and values of overseas Chinese，and language use of overseas Chinese in different parts of the world presents different characteristics. This paper gives a general description of the language use of Canadian Chinese by analyzing the 2016 Canada census data，and gives a crosstabs analysis of the language use of Canadian Chinese with different characteristics. It is found that although there has been an increase in the number of Canadian Chinese who can speak the official Canadian languages，most Canadian Chinese recognize Chinese as their mother tongue. The age，geographical distribution，immigration status and ancestral origin of Canadian Chinese have significant influence on their language use. Finally，the paper puts forward some suggestions to help Canadian Chinese parents and their children learn Chinese well，especially mandarin.