Trust　is　a　risky　social　decision　because　betrayal　may　occur.　It＇s　not　clear　how　individual　differences　in　social　risk-seeking　propensity　modulate　brain　processes　of　trusting　strangers.　We　examined　event-related　potentials　and　time-frequency　power　to　investigate　this　question　while　40　participants　played　the　one-shot　trust　game.　Twenty　high　social　risk-seekers　(HSR)　and　20　low　social　risk-seekers　(LSR)　made　trusting　or　distrusting　decisions　regarding　unknown　trustees　while　their　electroencephalogram　activity　was　recorded.　At　the　decision-making　stage,　HSR　participants　exhibited　a　larger　N2　and　increased　beta　power　following　distrusting　decisions　than　trusting　decisions,　suggesting　greater　cognitive　control　exerted　to　distrust.　By　contrast,　no　such　N2　and　beta　differences　were　found　for　LSR　participants.　At　the　outcome　evaluation　stage,　LSR　participants　exhibited　a　more　negative-going　difference　wave　between　loss　feedback-related　negativity　(FRN)　and　gain　FRN　(dFRN)　and　increased　theta　power　(following　losses　compared　to　gains)　than　did　HSR　participants,　indicating　enhanced　risk　sensitivity　of　LSR　people.　Our　findings　provide　insights　into　the　mechanism　by　which　social　risk-taking　facilitates　trusting　strangers.　The　results　also　shed　light　on　the　temporal　course　of　brain　activity　involved　in　trust　decision-making　and　outcome　evaluation,　as　well　as　how　individual　differences　modulate　brain　dynamics　of　trusting　strangers.