Abstract: To solve the problems of cumbersome，heavy workload，reliance on human experience and strong subjectivity in the design of blasting parameters in open-pit mines，a digital twin blasting effect predic‐ tion and evaluation system for open-pit mines is developed by integrating digital twin，artificial intelligence， numerical simulation and visual analysis technologies，in order to achieve intelligent and scientific design of blasting parameters and improve design efficiency and accuracy. The research adopts the systematic think‐ ing，constructs the system topology and functional architecture，and designs subsystems such as data acquisi‐ tion，data management，blasting simulation，effect prediction and evaluation. Web-end and APP-end appli‐ cations are developed .After in-depth research and development，a digital twin blasting effect prediction and evaluation system for open-pit mines has been successfully constructed，achieving automatic collection and update of geological data，intelligent analysis of blasting parameters，scientific prediction and evaluation of blasting effects，as well as visual display based on digital twins.This has significantly improved the scientific‐ ity and convenience of blasting parameter design in open-pit mines. It provides strong technical support for precise blasting in mines. This system is expected to become an important tool in the field of open-pit mine blasting operations，promoting the development of mine exploitation towards intelligence and refinement.

Key words: open-pit mine, blasting simulation, effect prediction