The purpose of this study is to analyze deeply the meaning, influencing factors and pressure of underage children and adult children's' filial conduct. Five underage children and five adult children are interviewed voluntarily. The major findings of this study are as following: 1. That is different from the meaning of underage children and adult children's' filial conduct, but the filial conduct is still the important family moral that Chinese values. 2. The major influencing factors that promote underage children and adult children's' filial conduct are their ages, and the particular family events. 3. The pressure of underage children filial conduct is the obeying and conformity, but the pressure of adult children' filial conduct is the diverse responsibility and role conflict. According to the major findings, some suggestions for the government, schools and family education are provided.