Taijiang County (simplified Chinese: 台江县; traditional Chinese: 台江縣; pinyin: Táijiāng Xiàn) is a county in eastern Guizhou province, China. It is under the administration of the Qiandongnan Miao and Dong Autonomous Prefecture. Taijiang County is a county under the jurisdiction of Qiandongnan Prefecture, Guizhou Province. It is located in the southeastern part of Guizhou Province and the middle of Qiandongnan Miao and Dong Autonomous Prefecture. There are Highway 65 and National Highway 320 passing through the county. According to the seventh census data, as of 0:00 on November 1, 2020, the resident population of Taijiang County was 122,861.

Taijiang County is divided into 2 subdistricts, 4 towns and 3 townships:

The Taijiang County is predominantly inhabited by the Miao ethnic group and is situated in the northern part of the Miao Mountains. Due to its long-term autonomy from direct control by the central Chinese dynasties, it was considered an "outlying region" by the central authorities. Historically, Taijiang County and the neighboring Miao regions have not been significantly influenced by external cultures, thus preserving the indigenous Miao culture quite well, earning the nickname "Shengmiao" (literally meaning "raw" or "untouched Miao").

There used to be nine drum societies in the area, collectively known as the "Nine Drum Miao" or "Nine Stock Miao," which were several kinship or regional organizational units. There was no unified chieftain authority present.

In 1726 （the fourth year of the Qing Yongzheng reign）, the Qing government perceived the vast Miao Mountain area as "beyond the reach of the empire," with a population of over one hundred thousand households and lacking local chieftain governance. Therefore, they decided to open up the Miao regions and launched extensive suppression campaigns against the indigenous Miao people. Following the Miao people's failed resistance against the Qing forces, in 1733, the Qing government established the Taigong Hall, incorporating the area into the empire's territory under the jurisdiction of Zhenyuan Prefecture, Guizhou Province. Subsequently, educational institutions teaching Han Chinese were established in the hinterland of the Miao regions.

In 1855, the Miao people led by Zhang Xiumei initiated an anti-Qing war, with anti-Qing forces centered around Taigong. The conflict spread across dozens of counties and lasted for 17 years, until it was ultimately quelled by the Hunan Army.

In 1914, Taigong Hall was renamed Taigong County. In 1941, a portion of Danjiang County was merged with Taigong County, and the new entity was named Taijiang County, taking "Tai" from Taigong County and "Jiang" from Danjiang County. During the period of the Republic of China, the government lacked the capability to extend its ruling influence into Taijiang.

The Taijiang River is located at the northern foot of Leigong Mountain, the main peak of Miaoling in the east of the Yunnan-Guizhou Plateau, and the south bank of the middle reaches of the Qingshui River. The topography of the territory is unique, with scattered mountains, basins and river valleys, complementing each other. The highest elevation is 1980 meters, the lowest elevation is 455 meters, and the average elevation is 717.5 meters.