Generally, the GrADS software could not set the title or notation in Chinese. It makes some inconvenience for domestic scientists. Based on the GrADS existing functions, we develop a set of key technologies, and implement the displaying Chinese character function in GrADS. These key technologies are as follows: Set up a userdefined Chinese character base which is suitable for the GrADS system, creat the index of Chinese character base, display Chinese characters along with English characters, find the exact character in the usedefined Chinese character base rapidly, decode the dotarray information of a Chinese character in the userdefined Chinese character base, and draw the Chinese character on the GrADS graphic area. The function of displaying Chinese character in GrADS is very convenient, efficient, portable, and could display Chinese along with English.