In order to provide certain references for further deepening the development of processing industry of agricultural products, this paper analyzed and elaborated the basic principles, construction priorities and safeguard measures of the development of deep processing industry of agricultural products in Nanchong City of Sichuan Province. Besides, it made a scientific planning for accelerating the deep processing of agricultural products in Nanchong City in 2018-2020, to ensure the full implementation of fine and deep processing of agricultural products.