Trust exists in all social activities, it is an important cornerstone of the establishment, maintenance and development of social relations. However, trust is fragile, and the violation or damage of trust will bring a lot of negative consequences to individuals, groups and societies. Therefore, how to repair damaged trust has become “one of the most important but unsolved problems” in the field of trust. From the perspective of the time phase model of trust repair, previous studies mainly discussed the repair strategies and their effects after the occurrence of trust violation, while few studies explored the trust repair strategies before the occurrence of trust violation from the perspective of “prevention”. In order to explore whether social mindfulness can be a pre-strategy of trust repair and the boundary conditions of its repairing effect, this study used the Somi paradigm to manipulate the social mindfulness of violators, and used trust game paradigm to investigate the effect of perceived social mindfulness on trust repair and the moderating effects of social distance and temporal distance. The trust game paradigm and the Somi paradigm were presented through a computer program. The study consisted of three experiments. In experiment 1, a single-factor within-subject experiment design was used to explore the impact of perceived social mindfulness on trust repair. The results showed that perceived social mindfulness can promote the repair of damaged trust, and the effectiveness of trust repair was greater when trustor perceived high (vs. low) social mindfulness from violator. In experiment 2, 2(social distance: near/far) ×2(perceived social mindfulness: high/low) mixed experimental design was used to explore the impact of perceived social mindfulness on trust repair under different social distance. The results showed that social distance moderated the effect of perceived social mindfulness on trust repair, and the repairing effectiveness of perceived high social mindfulness was greater when the violator who was stranger. Experiment 3 used a mixed experimental design of 2(social distance: near/far) ×2(temporal distance: short/long) ×2(perceived social mindfulness: high/low) to explore the impact of perceived social mindfulness on trust repair under different social distances and temporal distances. This experiment not only reconfirmed the findings of the experiment 1 and 2, but also found that temporal distance moderated the effect of social distance and perceived social mindfulness on trust repair. Specifically, the repairing effectiveness of perceived high social mindfulness was greater when the violator who was stranger responded in one week, and when the violator who was friend responded in one year. Thus, the trustor perceived the social mindfulness of the violator before the occurrence of trust violation can repair the damaged trust to some extent, but the repairing effectiveness was moderated by social distance and temporal distance. These findings enriched the previous research on trust repair from the perspective of “pro-strategy”, and have some implications for future research on the pre-strategy of trust repair and the application of social mindfulness theory.