Wenruitang River was formed in the early Jin Dynasty. It can be seen from the poems of Xie Lingyun, the chief of Yongjia in the Southern Dynasties, that he swam from Wenzhou to Xianyan and set sail. During the reign of Tang Huichang (841-846), Wei Yong, the satrap of Wenzhou, advocated dredging Huichang Lake, diverting water from Quxi, Xiong Xi and Guoxi, as well as Tongling, Miangang, Baiyun, Rhoda, Blowing Taiwan and other mountains, and connecting them with the Rui 'an section of the river by sailing in Ruian, southwest of Wenzhou, and reaching Ruian City directly. In the Northern Song Dynasty, lotus roots were planted all over the banks of the Tanghe River, which was known as the "eighty-mile lotus pond" in history. In the 14th year of Song Dynasty (1 18), it was well known that Wenzhou was dug and diked along the river, and the road was called "Nantang Post Road".

The water sources mainly come from Quxi, Xiong Xi, Guoxi (commonly known as Sanxi) and the mountain streams of Dahe Jiyun Mountain. The total basin area is 740 square kilometers, the water surface area is 22 square kilometers, the irrigation area is 482,000 mu, the average rainfall for many years is 1.694.8 mm, and the annual runoff is 9 1.3 million cubic meters. When the total length of the river network is 1 178.4km and Wusong elevation is 5m, the corresponding water storage capacity is 65 million cubic meters. Wenruitang River was dug manually in the Eastern Jin Dynasty, dredged on a large scale in the years of Tang Dahe and Huichang, and then built by the famous sacred tree in the Southern Song Dynasty, forming the "Eighty-mile Lotus Pond", which is an important symbol of Wenzhou's landscape city characteristics. The main channel of Wenruitang River was called Nantang River in ancient times and Qiputang River in Ming and Qing Dynasties. It starts from Xiaonanmen Yuejin Bridge in Lucheng District in the north, passes through wudan, Baixiang, Fanyou, Hekoutang, Tangxia, Xincheng and Jiuli in the south, and reaches Baiyan Bridge in the east gate of Ruian City in the west, with a total length of 33.85 kilometers. At normal water level, the width of the river is generally 50 meters, and the widest point is 200 meters. The criss-crossing water system of Wenruitang River plays a very important role in flood control, drainage, water supply, shipping, irrigation, landscape and ecological environment protection in our city, especially in the economic and social development of Wen Rui Plain, which is called "mother river" by Wenzhou people.

Wenruitang River waterway starts from Xiaonanmen Wharf in Lucheng District in the north and reaches Baiyanqiao Wharf in Dongmen of Ruian City in the south, passing through Lucheng District, Wu Ting, Nanhu Lake and ouhai district Baixiang. After Fanyou (Li 'ao Town) entered Rui 'an City, it passed through Hekoutang, Tangkou, Tangxia Town, Tingtian Town, Shenxian Town and Wangshang, Luo Feng Town, with a total length of 33. The riverbed is 30-50m wide, the water surface area of the river network is19.5km2, the drainage area is 704km2, and the total irrigation area is 482,000mu. The river is relatively stable. The main rivers in China are 20.4 kilometers long, with a drainage area of 298.7 square kilometers, a total length of trunk and tributary networks of 455 kilometers, a water surface area of 4.77 square kilometers and a water storage capacity of 20.2 million cubic meters.