Positioning, navigation and timing (PNT) services are important guarantees for national security, economic development, national infrastructure and people’s daily life. With the ubiquitous application of satellite navigation system, it has become the core cornerstone of PNT system. However, the failure risk and inherent vulnerability of satellite navigation system make its availability and reliability face potential threats, and the search for a reliable backup system has been widely concerned by the international community. Based on the current situation and existing problems of land-based long-range navigation system construction in China, this article analyzes the necessity of band-based long-range navigation system construction, and puts forward suggestions for the construction and development of land-based long-range navigation system, hoping to contribute to the construction of comprehensive PNT system in China.