The purpose of contaminated soil sites remediation is to eliminate soil pollution and realize reuse. In order to eliminate the new environmental impact caused by negative restoration and excessive restoration, the research aimed to systematically and scientifically analyze the sustainable effect of the restoration project of contaminated sites based on the concept of sustainable restoration. Combined with theoretical analysis and frequency analysis, the candidate evaluation indexes of the evaluation model of the sustainable restoration effect of the contaminated sites were determined, and the evaluating indicator was systematically screened by the grey relational analysis method. The AHP-entropy weight method was used to calculate and deduce the weight value of the evaluation index. The evaluation method of sustainable remediation of contaminated sites was developed according to the Fuzzy Comprehensive Evaluation (FCE) , the evaluation standard system, and the weight value of the evaluation index, which was further used to evaluate the remediation effect of a chemically contaminated site in Northeast China. The results showed that the weight value of environmental indicators reached 0.473 57, which accounted for the largest score in the weight ratio of the three evaluation indicators of environment, economy and society in the environmental indicators. The largest weight ratio of soil quality improvement was 0.215 02; and the reduction of health risks and the increase in the land price of contaminated sites were important factors in social and economic indicators, respectively. The sustainability score of the contaminated site case was 7.70, which was in the evaluation range of "good" points and consistent with the actual repairment. The results can guide the optimization of remediation plans. Therefore, the evaluation method for sustainable utilization and restoration of contaminated sites constructed in this study was feasible, which can provide the technical support for the formulation and comparison of contaminated sites restoration plans and comprehensive evaluation of post-restoration.