As we all known from historic records, Yao Zun once was a formerly Qinzhou district magistrate and was the main patron who had supported the opening Cave 661 in the Longmen Grottoes. By a careful study of his life story and comprehensive survey of the relative people that were mentioned a-bout in the inscription found in Cave 661, this article is reviewing the important fact that not only related fo Yao Zun himself but his offspring of next generations who were also devoted Buddhist as a family traditional belief during the Northern Wei Dynasty. The inscriptional records has filled in on the authentic historic record blank. Andforthemore, the images in Yao Zun’s creation cave offers a great help to us to study the art style of sculptures in the Longmen Grottoes during the reign period of Zhengguang(520-524) of the Northern Wei Dynasty.