With the advancement of technology, the advantages of single-person manned aircraft are gradually becoming evident in both civilian and military applications. This article designs a single-person propulsion jetpack, consisting of six subsystems: airframe, power, vector mechanism, flight control, human-machine interaction, and passive support. The airframe subsystem, based on finite element simulation, undergoes lightweight design to balance weight reduction and structural strength. The flight control subsystem, established on the mathematical model of the flight backpack, includes attitude control, stability control, and fault-tolerant control to achieve stable control of the flight backpack. Performance experiments are conducted on a physical platform to verify the effectiveness of the design, and the experimental results meet the performance requirements.