Large-scale power outages caused by extreme disasters such as typhoons and floods pose a great threat to the safe and stable operation of power systems. Reinforcing power system resilience is one of the effective means to resist extreme disasters. For this reason, research on resilience-orientated remote-control switch (RCS) allocation and line hardening strategies for distribution system was proposed. Firstly, a set of typical disaster scenarios was generated based on the Batts wind field model and line failure rates. Then, a three-stage operation model for prevention, degradation and restoration of a distribution system with a high proportion of distributed power sources was developed. Finally, considering the impact of RCS allocation and line hardening strategies on the restoration process of distribution networks, an economic and technical pre-disaster prevention scheme was proposed. The validity of the model was verified by the IEEE 33-bus system.