This research aims to find out how group communication patterns in the regional group of the Ruang Edit community can build member attachment to each other. The method in this research uses a case study qualitative method using B.Aubrey Fisher's Decision Emergence theory and Group Development Bruce Tuckman's approach. The data collection techniques used in this research are non-participant observation in the Jabodetabek and Jateng Regional groups, semi-structured interviews with founders, regional admins, and active members as informants, and documentation taken in the form of photographs of activities and other forms of writing. The result of this study is that each indicator of Decision Emergence theory produces various kinds and forms of communication patterns. The orientation phase uses secondary, one-way, and two-way communication patterns. The conflict phase uses linear and two-way communication patterns. The emergence phase uses circular and two-way communication patterns. The reinforcement phase uses circular, two-way, and multidirectional communication patterns. Keywords: Da’wah Communication pattern, Community, Ruang Edit