Yangshan County is subordinate to Qingyuan City, Guangdong Province, located in the northwest and central part of Qingyuan, the southern foot of Nanling Mountains, and the middle reaches of Lianjiang River. It is located between 112 ° 22'01 '- 113 ° 01'06' east longitude and 23 ° 58'47 '- 24 ° 55'52' north latitude. It is one of the 21 key counties for poverty alleviation and development in Guangdong Province. During the Warring States Period, there was the State of Yangyu, the Yangshan Pass was set up in the late Qin Dynasty, and the Yangshan County was set up in the Western Han Dynasty when the Emperor Gaozu, with a history of more than 2200 years. Yangshan County covers a total area of 3330 square kilometers and has jurisdiction over 12 towns and 1 Yao township. According to the data of the seventh population census, as of 0:00 on November 1, 2020, the permanent population of Yangshan County was 367175.

Yangshan County, 160 kilometers away from Guangzhou, is an important part of the "two-hour life circle" in the Pearl River Delta, with convenient waterway transportation. The Lianjiang River flows through the county from north to south, and can carry 150 tons of cargo ships all year round. Yangshan County is rich in natural resources and has the largest area of ecological public welfare forest in the province. It is "Guangdong Forestry Ecological County" and "National Forest Tourism Demonstration County". The main scenic spots include Guangdong First Peak, Shenbi Mountain, Beishan Ancient Temple, Lianjiang Scenic Spot and Nanling National Forest Park.

In 2020, Yangshan County achieved a GDP of 12.477 billion yuan, up 3.4% year on year.