Caizhizhai is an old-fashioned candy store in China, and its full name is Suzhou Caizhizhai candy store. Located in Guanqian Street, Suzhou City, Jiangsu Province, with branches in Shanghai and other places. Founded at the end of 19, it is famous at home and abroad for its variety and unique flavor of Soviet-style candy. There are hundreds of sweets produced and sold in Caizhizhai. There are also various kinds of pine nut soft candy, ebony cake, nine-ring chain, agarwood olive and so on. Its characteristics are exquisite selection of materials, fine processing, rich nutrition, sweet and delicious, which not only has the characteristics of traditional candy in China, but also absorbs the advantages of western candy and is unique. Some raw materials in candy are not only delicious, but also have nourishing and strong effects, all of which contain pharmacology in sweets.

Suzhou people, old and young, all know Caizhizhai candy. Caizhizhai Candy Store, located in the east of Guanqian Street, is an old shop with a history of 100 years. In the 9th year of Tongzhi in Qing Dynasty (l870), Jin, the founder of Caizhizhai (a native of Henan), bought simple tools such as a sugar cooker, a small copper pot, a bluestone table, scissors and a small amount of candy raw materials with a meager capital of 500 coppers, and set up a stall in front of the original tea shop at No.73 Guanqian Street. At first, only zongzi sugar was sold, and the sign "Little Sugar Stall in Zhusi Lane, Dudong, Du Xuan" was hung on the booth, where sugar was boiled and cut in public. Because the cut candy looks like zongzi, it is named zongzi candy. According to legend, this sugar-making technology originated in Xie Yunshan at the end of Wumen's printing, so it is also called "Xie Jia Sugar".

Caizhizhai is the most famous preserved fruit in Suzhou. Caizhizhai candy, known as "China candy", has entered the international market in large quantities.