Liannan Yao Autonomous County, located in the northwest of Guangdong Province, covers an area of 1306 square kilometers. It has jurisdiction over seven towns. At the end of 2019, the registered residence population was 176445. The Yao nationality is distributed in the mountainous area, which accounts for 88% of the county area; The Han nationality is distributed in Sanjiang Town, Zhaigang Town and other places, all of which are plain and hilly areas, accounting for 12% of the county area. It is a pilot project of fiscal reform in counties directly under the jurisdiction of Guangdong Province. According to the data of the seventh population census, as of 0:00 on November 1, 2020, the permanent population of Liannan Yao Autonomous County was 134691.

In 2020, the gross domestic product of Liannan County was 5.7 billion yuan, up 4.1% year on year. Among them, the added value of the primary industry was 1.165 billion yuan, up 4.1% year on year; The added value of the secondary industry was 1.417 billion yuan, up 10.9% year on year; The added value of the tertiary industry was 3.119 billion yuan, up 1.6% year on year. The tertiary industrial structure is 20.4:24.9:54.7.

In December 2019, Liannan Yao Autonomous County won the seventh batch of national demonstration areas (units) for national unity and progress. On October 9, 2020, it was awarded the title of the fourth batch of national ecological civilization construction demonstration cities and counties by the Ministry of Ecological Environment.