This article explores the origin of“Nian's Appointment”and analyzes later scholars' understanding of it. The author's view is that we should explain and define“Nian's Appointment”in its entirety. The Yongzheng Emperor's giving power over personnel appointments to Nian Gengyao was the necessary condition of Nian's Appointment. Nian's self-employment for private interest was the sufficient condition of Nian's Appointment. The end of Nian's Appointment was due to Emperor Yongzheng's re-emphasizing that“favor and authority completely comes from me”，which was a step toward the Qing emperors realizing a monopoly of power.