Abstract: Public crisis emergency has become an urgent issue of global governance，which imposes huge challenge to governments of all countries.How to achieve effective repair of trust in governments and avoid falling into the Tacitus Trap is one of the core issues in both trust studies and emergency management practice. From the perspective of behavioral public administration，the respective definition of trust in government and trust repair is given，and a dual-process model of trust repair is constructed on the basis of cognitive evaluation and emotion mediation.That is to say，the results of government trust restoration are influenced by both trustworthiness evaluation caused by cognitive attribution and the mediating effect of individual and group emotional sharing. In terms of coping strategies，it is helpful to increase the public’s external，uncontrollable and unstable attribution of negative events by means of accounts，explanation，excuse，denial，punishment and supervision，thus raising public’s trustworthiness evaluation on the government. Meanwhile，redu-
cing emotional responses against negative outcome on the individual level by means of apology，commitment，compensation and reducing negative emotions on the public group level through inter-group contacts are also conducive to the repair of trust in governments.

Key words: public crisis, trust in governments, trust repair, cognitive attribution, emotional sharing, dual-process model