This study discusses the interpersonal communication of married couples in building a healthy relationship by applying five aspects of interpersonal communication: openness, empathy, supportiveness, equality, and positivity. This research uses a qualitative approach with a case study method. The subjects were five married couples living in Kampung Keluarga Berkualitas Serumpun, Bandung City. Data collection techniques included in-depth interviews and literature studies. The results showed that the five aspects of interpersonal communication were consistently applied by the couples to build a healthy relationship. The Kampung KB program also played a role in creating a supportive environment for positive spousal communication. In conclusion, effective interpersonal communication is the main foundation for a healthy and harmonious marriage.