Former Suzhou Customs Tax Department, Historical customs building in Suzhou, China

The Former Suzhou Customs Tax Department stands outside Midu Bridge in the Gusu District of Suzhou, Jiangsu. Four Western-style red-brick buildings survive: a two-storey main office block and three attached villas. The site is a Jiangsu provincial cultural relic protection unit.

The Suzhou Customs Tax Department was set up in 1896, after the 1895 Treaty of Shimonoseki opened Suzhou as a treaty port. Its jurisdiction reached Jiaxing in the south and Danyang in the west. The office stopped working when Japanese troops took Suzhou in 1937, and the buildings were later used as housing.

The building shows how Western and Chinese architectural styles came together during a period of growing international trade. Visitors can see on the facade and in the details how China's administration adapted to new global conditions.

The site stands outside Midu Bridge in the Gusu District, not in the city centre. The four red-brick buildings are not open for interior visits; the complex was restored after 2007 and handed to the Communist Youth League committee for external exchanges, so visitors see the exterior only.

The site lies just outside Midu Bridge in the Gusu District, on land that was once Suzhou's only foreign concession, the Japanese concession, where British and French consulates also stood. In 2010 the compound was put on the list of Grand Canal heritage sites in Suzhou submitted for World Heritage status.