CaiShiKou is near the CaiShiKou Department Store in XuanWu District, Beijing, at the intersection of GuangAnMenNei Street and XuanWuMenWai Street in the Xicheng District of Beijing.

Cai Shi Kou, the court of law for killing people in the Qing Dynasty, Beijing has many hutongs, and Cai Shi Kou is famous because it used to be a place for killing people, an execution ground, and many celebrities were beheaded in Cai Shi Kou.