佐贰官是相对正官而言,其意在于辅助。清代州县佐贰官主要包括州同、州判、县丞和主簿。自秦汉设官以来,在地方权力结构中刻意构建交错和制约的关系是统治者强化政府内部监督的重要途径。正佐之间相互监督机制的推行在历史上确实也曾发挥过相当的效能。明清以降,随着主官负责制的不断强化,正佐监督机制逐步沦为形 Zuo Er Guan is relative to the official, its purpose is to assist. Zuo ancestors of the Qing Dynasty counties mainly include the state with the state sentence, County Cheng and the main book. Since the Qin and Han dynasties set up officials, the deliberate construction of the interdependence and the restraint in the local power structure is an important way for the rulers to strengthen the internal supervision of the government. The implementation of the mutual supervision mechanism between the two countries has indeed played a considerable role in history. In the Ming and Qing dynasties, with the continual strengthening of the principal responsibility system,