Given the context of Integration of Jing-Jin-Ji，the paper tries to take the theoretical base of Institutional Collective Action （ICA） to empirically analyze the collaborative status among local governments under the Integration of Jing-jin-ji based on 215 items of collected agreements （2013-2019） by the means of Social Network Analysis（SNA） via UCINET Software，especially to expose the collaborative visually，Network Density，Centrality and Cohesion Subgroup etc. Throughout the research findings，the paper finds out there have been certain collaborative effects by the inter local governments in Jing-jin-ji，however some transparent problems are still restricted for the future collaboration，for instance the distribution of sub-groups have been formulated but in a cooperation situation with Differentiated Sequence，the adjunct collaborations have been fully utilized but with a negative inertia of dependent path，and active collaborative responses in some vital fields have been achieved but with flaws of imbalanced developments. On the basis of above problems，the paper upholds four main proposals to sustainably deepen the mutual trust system，robustly advances the construction of Interest Group，elaborately set up resistant collaboration mechanism focusing on dissolving the extant challenges and shortages for the collaboration of inter-governments under the integration of Jing-jin-ji and comprehensively improve the collaborative performance of the regional integration of Jing-Jin-Ji.