The　present　study　investigated　the　association　between　body　talk　on　social　networking　sites　(SNS)　and　body　dissatisfaction　as　well　as　the　mediating　effects　of　appearance　ideals　internalization　and　appearance　comparison　in　this　relationship.　Participants　were　476　Chinese　college　students　who　completed　questionnaires　regarding　SNS　body　talk,　thin-ideal　internalization,　muscular-ideal　internalization,　general　attractiveness　internalization,　appearance　comparison,　and　body　dissatisfaction.　Results　indicated　that　SNS　body　talk　was　positively　linked　to　body　dissatisfaction.　The　relationship　between　SNS　body　talk　and　body　dissatisfaction　was　mediated　by　thin-ideal　internalization　and　muscular-ideal　internalization　while　the　mediating　effects　of　general　attractiveness　internalization　and　appearance　comparison　in　this　relationship　were　nonsignificant.　Moderated　mediation　analysis　further　revealed　that　thin-ideal　internalization　mediated　the　association　for　women　but　not　men　and　that　other　indirect　effects　did　not　differ　among　genders.　The　findings　of　this　study　provide　more　insights　into　the　relationship　between　SNS　use　and　body　image.