Viscount Zhuang of Zhao,given name Shuo, was a vassal lord of the state of Jin. He was the son of Viscount Xuan of Zhao and the 3rd viscount of Zhao.
In 597 BCE, Shuo participated in the battle of Bi between the state of Jin and Chu. He was the commander of the lower army; one of the three armies of Jin.
He was presumably murdered during the disaster of Xiagong. However, no other mentions of Viscount Zhuang were found in Zuo Zhuan, the primary historical record of the Spring and Autumn period.
In 583 BCE, Duke Jing of Jin attacked the vassal state of Zhao. Viscount Xuan's brother Zhao Tong and Zhao Kuo were killed. Viscount Xian of Han lamented Zhao's imminent fall. He reasoned with Duke Jing by arguing that Viscount Wu and Viscount Xuan both served loyally the state of Jin; it is not just to exterminate their clan. According to Han, Viscount Zhuang had died before the year of 583 BCE. The only remaining successor was Zhao Wu, viscount Zhuang's son.
With the help of Han, Zhao's power was restored. Zhao Wu inherited his father's title.