Khirkiz language in Heilongjiang Province in China is the language originally used by the Khirkiz people lived in Xinjiang who joined the army and banished to Heilongjiang in 1761. It has changed a lot now because of the influence of the other languages around. Up to now it is not fully studied especially in the field of the comparative study with Mongolian language and this is the first time to do the research formally. The article makes a comparative study of the consonants in Khirkiz language in Heilongjiang and in Mongolian language. It clarifies some phonetic correspondence principles and the phenomena such as phonetic losses, changes of positions and amplifications. It also illustrates the reasons of the phonetic changes and the basis of phonetics. The article systematically clarifies the phonetic characteristics in Khirkiz language in Heilongjiang and the relations with Mongolian language and other Turkic languages.