Chen Wei Sung's work of Tsyr was the most abundant in the successive generations. Chen's "Complete Works of Fu Hai Lo" included 30 books of Tsry, which collected more than 1000 pieces work of Tsyr and nothing was excluded. One of the characteristic of Chen's work was Social Tsyr which concerns livelihood of the people. Chen's care about social livelihood could be strongly related to his contemporary background, personal expereience and individual character. He was the descendant of the Four Integrity Men of Ming Dynasty and experienced the ruin of Ming Dynasty, broken family, flunking the examination for official career and depending on receiving guidance and support from others. Moreover, becasue of his characater of sorrowing over miseries and concept of preserving literature, what he met after 8th year of Kang Hsi was unfairness and painfulness to farmers caused by taxation, flooding, harsh government, war and unven distribution of wealth. He monitored government administration and expressed public opinions by writing Tsyr. The content of Chen's Social Tsyr discussed social problems, which pointed out heavy tax, the catastrophe brought by war, high commodity price casued by lack of harvest. He was the one who first use Tsyr to record the fact of his contemporary social life. Becasue of his literatury work, we are able to peek the dark side of Ching society during the period of Kang Hsi. The contribution of Chen's Social Tsyr included: 1. recording history, 2. preserving regulation and system, 3. expanding the territory of Tsyr, 4. promoting the position of Tsyr. His social Tsyr was a glory and break through in the Tsyr's history.