Beidou No.3 System is a global navigation satellite system built by China independently. The cloud platform，realizing the unified management, on-demand sharing, and real-time dynamic allocation of software and hardware resources，is essential  to the BDS-3’s ground system. This paper introduces the architecture and process of BDS-3’s cloud platform based on engineering practice and summarizes the representative technical breakthroughs in the cloud platform construction and improvement. The trend of the next generation satellite navigation system is diverse in service types, customized on service information, safe and reliable on capability. The integration between cloud-native technology and the business of navigation ground systems is put forward to improve the efficiency of development and operation; from the perspective of infrastructure structure, it is suggested that the navigation ground cloud be fully autonomous and controllable in stages. Finally, we look forward to the cloud platform architecture of the next-generation navigation ground system. The system architecture, composed of a cloud center, network and terminal, transforms from the construction of independent nodes to the unified construction of all distributed nodes. The navigation ground system will further improve operation and management efficiency and the disaster tolerance and survivability.