Abstract: Under the situation of sudden police corruption, effect difference of different trust repair strategies was systematically analyzed through three experiments. The experimental results showed that: Firstly, the effects of trust repair strategies under different trust violation type have significant differences. When faced with power-oriented trust violation, the effect of combined strategy of “apology and commitment” is the best, and it needs be cautious and prudent to use the denial repair strategy; and in responsibility-oriented violation, the combined strategy of “denial and commitment” can better soothe people’s negative emotions, and repair damaged trust. Secondly, repair time has great influence on trust repair effect. Trust repair strategies after a brief delay have good effect, but the best delay time should not be dragged too long, and long time delay, such as 1 week, is ineffective even may lead to the reverse effect (bad results). Thirdly, intervention of third party has significant influence on trust repair effect. The higher the government credibility is, the better of trust repair strategies’ effect is，and it is helpful to repair the fragility of police trust.