This study investigated the relationship between conflict issues and resolution strategies in pretend play. Also, the relations among frequency of internal state terms, conflict resolution, and communicative strategies were examined. 704 and 5 year old preschoolers, each paired with self-chosen peer, were observed and videotaped during 20-minute play session. Findings revealed that conflict issues were associated with resolution strategies. Internal state language and communicative strategies were related with conflict resolutions in pretend play, which shared with socio-emotional ability.