In this paper,an in-depth study is conducted regarding the train automatic wake-up function of fully automatic driverless trains using FMEA method.The study analyzes the failure modes that may produce dangerous consequences,identifies their corresponding failure causes,and designs appropriate safety measures based on these failure modes and causes.This approach ensures that the fully automatic unmanned driving system reduces the original risks of the system,as well as the risks caused by new functions,to an acceptable degree,and achieves safe and reliable operation.