This article focuses on the importance of ecological risk assessment in environmental assessment.By analyzing the development process of ecological risk assessment methods and the limitations of traditional methods,innovative and practical environmental assessment methods based on ecological risk assessment are proposed.Firstly,the theoretical basis of ecological risk assessment was introduced,including concepts,principles,classifications,and characteristics;Secondly,a new environmental impact assessment process based on ecological risk assessment was designed,emphasizing full consideration of ecosystem health and stability;Then,an innovative environmental impact assessment index system was constructed,which comprehensively considers aspects such as ecosystem health,ecological risks,restoration and restoration,social participation,and risk management.Subsequently,through specific case analysis,the application and effectiveness of ecological risk assessment methods in environmental impact assessment practice were demonstrated,demonstrating their important role in environmental protection and sustainable development.