Abstract: Public signs,as a carrier spreading Chinese culture,play an irreplaceable part,not only in giving people mental suggestion,but also in regulating the use of language to provide necessary barrier against the cultural infiltration of western developed countries at the same time.However,the present public signs are in disorder,such as, text in poor quality,words in irregular form,the loss of the dominant position of Chinese character and westernization of Chinese in the name of corresponding with i..