Jiashi County is subordinate to the Kashgar region of Xinjiang Uygur Autonomous Region. It is called "Paizi Awati" in Uygur language, which means a beautiful and rich place. It is located in the middle and lower reaches of the Kashgar impact plain, at the southern foot of the Tianshan Mountains, and at the western edge of the Tarim Basin, and belongs to the earthquake-prone zone. The geographical coordinates are 39 ° 16 ′ - 40 ° 00 ′ N and 76 ° 20 ′ - 78 ° 00 ′ E; It is adjacent to Bachu in the east, Shule in the west, Yuepu Lake in the south, Keping South Branch of Tianshan Mountains in the north, and Atushi City of Kizilsu Kirgiz Autonomous Prefecture in the northwest. Baren Town of Jiashi County is 1338 kilometers away from Urumqi. Jiashi County is an important commercial port with a long reputation on the southern route of the "Silk Road", and is one of the famous ancient western regions.

Jiashi County is named after Jiashi River. "Jiashi" is like a different translation of the same word "Kashi", which means "jade" in Turkic language. The Uyghur language is called "Paizi Awati", which means the prosperity of heaven. The "Western Regions Atlas" is the license rent Abat, and the "Western Regions Tongwen Annals" explains: "The license rent is the name of heaven; Abat is the word of happiness." It is also known as Baren.

The administrative area of Jiashi County is 6528 square kilometers; It has jurisdiction over 3 towns and 10 townships; By the end of 2019, the registered residence population of Jiashi County was 444969. In 2021, the gross regional product (GDP) of Jiashi County will reach 8.529 billion yuan, an increase of 10.5% over the previous year.

Jiashi County is an alluvial plain composed of Kizilsu river deposits and the tail of the alluvial fan. It is an oasis on the western edge of the Taklimakan Desert and is known as the "pearl of the western region". The terrain is high in the west and low in the east, and high in the north and low in the south. There are Paizi Awati River, Kizil River and Telvechek River crossing the territory.

On September 25, 2018, it was awarded the honorary title of "2018 Comprehensive Demonstration County of E-commerce in Rural Areas" by the Ministry of Commerce.