Yu Chenglong died of old age. In the sixth year of Kangxi (1667), Yu Chenglong was promoted to Hezhou, Sichuan. Later, he moved to be the Tongzhi and Zhifu of Huangzhou Prefecture in Huguang, and served as the magistrate of Wuchang, the provincial judge of Fujian, the deployment ambassador, the governor, and the governor.

In the twentieth year of Kangxi (168 1), he entered Beijing and was promoted to the governor of Jiangnan and Jiangxi. In the 23rd year of Kangxi (1684), the court ordered Yu Chenglong to take charge of the political affairs of the governor of Jiangsu and Anhui, and he died in office soon.

Yu Chenglong was a late bloomer. In the 12th year of Chongzhen in Ming Dynasty (1639), Yu Chenglong once took part in the provincial examination and won the second place in the top prize, but because his father was old and needed to be taken care of, he didn't go out to be an official.

It was not until he was forty-five years old that he was elected to the official department of the Qing court by the Ming Dynasty, and he was named as the county magistrate of Luocheng, Liuzhou, Guangxi. Since then, he has served as a magistrate, county magistrate, Taoist priest and other local officials, and has always been a vassal (provincial judge, political envoy) and governor, with political voices everywhere he goes. In particular, he has always been honest and self-disciplined, doing more good deeds and winning the love of the people.