Strengthening the construction of national strategic hinterlands is the implementation of the strategic deployment of "guaranteeing the new development pattern with a new security pattern" proposed by the 20th National Congress of the Communist Party of China, demonstrating the significant strategic considerations of the CPC Central Committee in coordinating and realizing the dynamic balance of the high-quality development and high-level security. As a specific national strategic hinterland, superimposed on the development trend of urban agglomerations becoming spatial growth poles and factor carriers of regional development, it is of significant importance for Chengdu-Chongqing Economic Circle to actively serve and integrate into the construction of the national strategic hinterland in the new era. The "national strategic hinterland" is adjacent to the national-level growth poles or pilot regions, possessing the foundation for high-quality economic development and industrial undertaking capability. It can support the overall economic operation, undertake industry transfer, provide resource supply, and ensure ecological security during general or special periods, and serve the overall national strategic development. The "core carrier area of national strategic hinterlands" is the important positioning of the Chengdu-Chongqing Economic Circle in the construction of the national strategic hinterland, which undertakes the pursuit of high-quality development of "making overall development planning based on one region". It embodies the value attributes of the CPC Central Committee in coordinating high-quality development and high-level security, being a key space where locality and systematicity coexist, an important growth pole driving the high-quality development of various strategic hinterlands. The core carrier area of national strategic hinterlands in the new era shall have development advantages such as active economic organizations, complete industrial categories, sufficient factor supply, and perfect infrastructure. Currently, the Chengdu-Chongqing Economic Circle possesses comparative advantages of building the core carrier area of national strategic hinterlands in the new era, including a "solid and comprehensive" development foundation and industrial system, the key technological innovation strength to maintain and stabilize the industry chains, industry backup and undertaking capacity that "serves the overall situation", and factor supply and facility support for both peacetime and wartime. However, there are weaknesses of incomplete regional spatial structure development, low efficiency in transforming high-tech achievements, and homogeneity of industries and low visibility within the region. In the future, the Chengdu-Chongqing Economic Circle shall build a backup base for national key strategic industries with strategic thinking, develop a regional innovation system and model of independent innovation with innovative thinking, create a strategic base for ensuring the supply of China's important primary products with thinking that can deal with worst-case scenarios, and improve the industrial system for both peacetime and wartime and swift responses to emergencies with thinking that can deal with extreme-case scenarios, striving to build a core carrier area of national strategic hinterlands in the new era.