Abstract: Confucianism provides legitimate foundation for "Kin Concealment" system in ethnic. "Kin Concealment" system originated in the times of Spring and Autumn Period, Qin and early Han Dynasty, developed in Tang, Song, Yuan, Ming and Qing Dynasty, and realized the modern transformation from Late Qing Dynasty to the Republic of China Period. After the Cultural Revolution period, "placing righteousness above family loyalty" replaced "Kin Concealment" system. However, the promulgation of amendment of Criminal Procedural Law changed this condition, which introduced the spirit of "Kin concealment" into law.