Modest words included modest appellation and modest adverb,and they were the reflection of etiquette culture.

From the use, the modal adverb, mood adverbs, negative adverbs, referential adverbs and honorable adverbs can represent the main uses and meanings in pre-Qin dynasties.

But a thorough analysis of the language materials relative to the problem in the West Zhou times did not show the difference in the function of modesty and respect, among the first personal pronouns in the Chinese language.

It contains a lot of terms of respect, which reflects the etiquette and rank system of the Han Dynasty.

In this paper the author expounds the appropriateness of polite expressions in ancient Chinese in the verbal communication from three respects such as modest and respectful forms of expression, adverbs for polite expression and euphemism.

Chinese perspective law can be deduced from general situation,the characteristics,origin and develpment of courtesy appellation of the middle ancient tim.