Sihe Township, belonging to Lindian County, Daqing City, Heilongjiang Province, is located in the northern part of Lindian County, adjacent to Dongxing Township in the east, Hongwei Township in the south, Sanhe Township in the west, and Prosperity Township in Fuyu County, Qiqihar City, in the north, with an area of 436.46 square kilometers and a household population of 24,866 in 2018. At the end of the Qing Dynasty, it belonged to Anda Hall and Anda County. In the thirty-sixth year of the Republic of China (June 1947), it belonged to the Sixth District.In 1968, it was renamed Wenge Commune.In June 1981, it was renamed Sihe Commune.In 1984, the commune was changed to a township. As of October 2019, there are 11 administrative villages under the jurisdiction of Sihe Township. In 2018, Sihe Township had 6 industrial enterprises and 47 general stores or supermarkets with business area over 50 square meters.