This article based on the PAC personality theory, explores how personalities are manifested in court mediations from interpersonal pragmatic perspective. Results show that a mediator's personality is closely related to interpersonal relations. The different personalities of the mediator and the parties concerned can be constructive or deconstructive in building relationships, as the modality-oriented expressions which reveal personalities of two parties in mediation can be purposeful or negative. The personality variations lead to the evaluation of interpersonal relations by the communicators, which is a dynamic and negotiable process and provides the possibility for mediation. Based on the findings, personality-based strategies for court mediation are suggested for reference.