The invention discloses a component fault tripping distinguishing method and a component fault tripping distinguishing device for stable control. The method comprises the following steps: distinguishing component fault starting with a current break variable and a power break variable; identifying the fault with significant characteristics of a current and a voltage; and confirming component fault tripping according to a tripping signal of a component relay protection device, distinguishing the fault type and executing a stable control strategy. The component fault tripping distinguishing method is high in sensitivity and high in reliability and has good selectivity.