During the Ming and Qing Dynasties, the Cao Shi family, the richest businessman in Shanxi, built magnificent houses, represented by four courtyards: Fu, Lu, Shou and Shou. The existing three halls are a "longevity"-shaped house, which means "many blessings, many children and many longevity". Built in the late Ming and early Qing dynasties, it covers an area of 10638 square meters. The building looks like a castle, which is large in scale, integrated with north and south, thick and simple, unique in structure and compact in layout. It is quite representative in the houses of Shanxi merchants and truly reflects their economic strength.
The collection of cultural relics mainly includes Ming and Qing furniture, porcelain and Zhao Tieshan's calligraphy works. The exhibition hall of the museum covers an area of 3,000 square meters, which basically displays the business history of the Cao Shi family, reflecting the process of the Cao Shi family of Shanxi merchants from hard work, brilliant creation to decline; "Ming and Qing Furniture Exhibition" exhibited more than 400 pieces of furniture such as "Hundred Years Big Screen" in Qing Dynasty. "Porcelain Collection Exhibition" exhibited more than 200 pieces of Ming and Qing porcelains; In addition, there are "Treasures Exhibition" and "Zhao Tieshan Calligraphy Exhibition". The museum has an office, a finance department, a general affairs department, a tour guide department and a security department, and published Sanduotang and the Shanxi Merchants Pavilion? Cao Jia album.