As an effective way to promote the construction of trans-regional innovation system, innovation community has become an important model for city cluster type independent innovation demonstration zone(IIDZ) to lead regional balanced development and cross-border collaborative innovation. Its construction basis determines the choice of innovation path and breakthrough focus of IIDZ. In combination with the basic connotation and operation structure in innovation communities of city cluster type IIDZ, the “four forces” evaluation system covering independent innovation, collaborative allocation, benefit contribution and international competitiveness is designed. The Global Entropy Method and the Coupling Coordination Degree Model are used to measure the “four forces” coupling coordination level of 41 core parks in 8 city cluster type IIDZs in China. The results show that the “four forces” coupling coordination level of core parks shows a stable and skewed distribution, with significant differences between the plates and a positive trend. The “four forces” in the IIDZs are polarized and have different advantages. Then, based on Dagum Gini coefficient, the intra-group and inter-group differences on the basis of innovation community construction are revealed, and the source of the differences is analyzed. Intra-group differences show that the more core parks are covered, the more difficult collaborative innovation is. The core parks are disequilibrium alienation, and the difference changes are obviously contrasted. Inter-group differences show that the foundation of innovation community construction shows four types: striving to be the first, shock entanglement, slow and steady, and growth imprisonment. Finally, the construction strategies of innovation community are proposed from innovation impetus, collaborative allocation, benefit output and international competition, in order to provide reference for building a high-quality tight innovation ecosystem.