Remote sensing ground station is an important component of satellite systems and its core functions include task planning, space-earth coordination and data reception. Its reliability will have a significant impact on satellite remote sensing systems. To meet the reliability requirement of the system, the remote sensing ground station software adopts a series of reliability design methods under the premise of localization, mainly including: Adopting an object-oriented software layered architecture to reduce software complexity and control the number of software defects; Adopting software redundant design to reduce the impact of potential errors within the software; Adopting real-time active fault diagnosis to monitor possible faults in real-time and ensure system operation.