The capture and conversion of CO2 into value-added chemicals has become an imminent research topic in both scientific and industrial area. The cycloaddition of CO2 with C1 resource such as epoxides to produce cyclic carbonates is an promising and efficiency pathway for CO2 utilization. The development of catalyst for CO2 cycloaddition with epoxides at low pressure is still a challenge. Herein, we reported the preparation of cyclic polypyrazoles integrated with bromoethane, which can serve as hydrogen bonding donor and nucleophilic groups, respectively, for activation of the epoxides and subsequent cycloaddition of CO2. The as-obtained ionic cyclic polypyrazoles (ICPP) could exist in the form of polymetric pseudo liquid during reaction and then turns into heterogenous state after reaction due to the low glass transition temperature. By changing the reaction temperature and ratio of catalyst to epoxides, an optimized performance which show a epoxides conversion over 90 % and a selectivity of 99 % to cyclic carbonate was realized under 0.1 MPa in the absence of cocatalysts and additives. The catalyst can be facilely recovered due to its high stability, and no obvious decrease in conversion was observed after five successive runs. This work provides a sustainable and green process for CO2 cycloaddition, and also highlights the potential of using ionic cyclic polypyrazole for conversion of CO2 into value-added chemicals.