This study aimed to qualitatively explore the network experiences of practitioners supporting refugee children. Data were collected through in-depth interviews with eight practitioners and analyzed using the grounded theory research method. The study identified 42 concepts, 18 subcategories, and 6 upper categories. As a paradigm model, in the causal condition (“network formation”), the initiative of base institutions and lawyers and the innate characteristics of each institution played a role. In the contextual condition (“the situational condition of the network”), the grievances of practitioners in a poor practical environment worked in context. The central phenomenon — “the characteristics of the refugee child support network” — was found to be voluntary and loose networks with relationship-oriented cooperative solidarity. As intervening conditions, “obstacle of the network,” contribution within the network, cultural and political differences, practitioners’ work burden, and retirement played a role. The “network activation factor,” which is an action/interaction strategy, included a joint project, space/financial security, official recognition, learning, and communication. The welfare and practice of refugee children showed improvement in the work environment in terms of the “result of network participation.” The core category of selection coding was derived as “respecting and solidarity with each other based on dedication and spontaneity, and improving the welfare environment of refugee children.” The academic and practical implications of the results are presented.