Suzhi, that is officials at night on duty lodging in Yamen，an important part of the political system in the Tang Dynasty. However, due to the particularity of time, in the process of execution, although there are strict appraisal and punishment provisions, it often appears contrary to the law. There are generally three kinds of violations: oldagedisease, family affairs, and lack of excuse. Many poets in the Tang dynasty also participated in, and wrote a lot of poems about Suzhi. Some of them because of the political environment and personal political experience, showed the lamentable emotions about disease and oldness in their Suzhi poems, and through this emotions to express their disgust，which Quan Deyu and Bai Juyi being the most prominent.But their disgusting emotions are not aimed at the system of Suzhi，and this will reveal special political information of the times, which helps us to understand the political climate at that time.

politics system in the Tang Dynasty; general mocd of politics in the Tang Dynasty; “Suzhi” political system; Political Emotions