Sanwei Village is an administrative village under the jurisdiction of Sanjia Town, Yangchun City, Yangjiang City, Guangdong Province. The urban-rural classification code is 122, and it is a town-rural integration area. The zoning code is 441781114201, and the first 6 digits of the resident ID number are 441781. The postal code is 529500, the long-distance area code is 0662, and the license plate number is Guangdong Q. Sanwei Village and Shanping Community, Shuanghe Village, Central Village, Sanjia Community, Qujiang Village, Najing Village, Dadong Village, Luocun Village, Daxin Village, Xinpo Village, Xinlou Village, Dachong Village, Pangdong Village and Pangbei Village are adjacent.

Near Sanwei Village, there are tourist attractions such as Liu’s Family School, Zaoluo Village Lan’s Ancestral Hall, Hebei Fan’s Ancestral Hall, Yangchun Lingxiao Rock, and Chunwan Scenic Area. There are Yangchun Sanjia Cut Noodles, Yangchunchun Amomum, Yangchun horse orange, Gaodong horse orange, Guigang larvae and other specialties.