The article conducts AEZ in the hilly areas of Bac Giang province based on the analysis of the division of natural conditions of the region, 17 most typical criteria have been selected. Based on the size of the area, the scale of the map and the complexity of the natural conditions, the hilly areas of Bac Giang province are classified into 4 levels: Agro- ecological zone, Agro-ecological sub-zone, Agro-ecological Cell (AEC), Agro-ecological Unit. The results show that the Bac Giang hilly area is located in the Bac Giang hilly and mountainous region and is divided into 3 Agro-ecological zones and 1 Agro-ecological sub-zone; 12 AECs, 164 Agro-ecological units. The AEZ of different levels has great significance in ecological zoning for crops and crop systems, making an important contribution to the sustainable development land use planning at the local level.