Tanghe County, under the jurisdiction of Nanyang City, Henan Province, is located in the southwest of Henan Province, at the junction of Henan and Hubei, near Wancheng District of Nanyang City in the west, Zaoyang City in Hubei Province in the south, Tongbai County and Biyang County of Zhumadian City in the east, and Sheqi County in the north. In ancient times, it was the official road leading to Jianghan Plain in Chang'an and Luoyang of Kyoto. It was rich in resources and people. With a total area of 2512 square kilometers, it has jurisdiction over 4 streets, 14 towns and 5 townships. According to the data of the seventh population census, as of 00:00 on November 1, 2020, the permanent population of Tanghe County is 1052978.

Tanghe, known as Tangzhou and Biyang in ancient times, has a long history and is a pearl in Zhongzhou. In the Xia and Shang Dynasties, Yugong was the territory of Yuzhou, and Zhou was the land of Shen, Xie, Tang and Liao. In 505 BC, the State of Chu established Huyang County, while the State of Qin still established Huyang County, which belongs to Nanyang County. There are many cultural sites of Yangshao and Qujialing in the territory. It is the hometown of Ma Wu, the general of Liu Xiu, Emperor Guangwu of the Eastern Han Dynasty, Fan Hong, the doctor of Guanglu, and Feng Youlan, the leader of modern Chinese philosophy.

Tanghe County is a famous commodity grain, cotton and oil base in China, and also an important oil base in Henan Province. It is one of the more powerful counties and cities in Henan Province. Its comprehensive economic strength ranks in the forefront of all counties in Nanyang City. Tanghe County has successively won the honorary titles of National Advanced County for Science and Technology Progress, "Home of Gardens in China", Top 100 Counties and Cities in Central China, Henan Advanced County for Opening up to the Outside World, Henan Advanced County for Safe Construction, and Henan Comprehensive Demonstration County for E-commerce in Rural Areas. In 2015, the State Council approved the "Revitalization and Development Plan for the Old Revolutionary Base Area of Dabie Mountains", which incorporated the development of Tanghe County into the national strategy.

In 2018, the gross regional product of Tanghe County was 32.05 billion yuan, an increase of 8.5%; Investment in fixed assets increased by 15.6%; The added value of industries above designated size increased by 9%; The total retail sales of consumer goods increased by 12.2%; The per capita disposable income of urban and rural residents was 19335 yuan, up 8.8%; The general public budget revenue was 940 million yuan, up 10%.