The design and construction of traditional blasting for open-pit mines are mostly implemented based on the experience of blasting operators or engineering analogy method,which lead to typical problems such as large design deviation,low drilling accuracy and large blasting boulder yield.In order to improve consistency in blasting engineering design and construction,reduce waste of labor,materials,and machinery,and improve bench blasting effectiveness,a set of intelligent blasting design optimization system software was developed.It involves modules of bench blasting design,statistical analysis of fragmentation distribution of blasting pile,blasting vibration analysis and prediction,comprehensive evaluation of blasting effect,and so on.Using the software,the original data of blasting object is extracted based on high-precision GPS measurement technology,and the design results are then exported to the construction site.Taking the open-pit limestone mining of a cement plant in Guizhou as an example,GPS is used to collect the topographic data of the current mining area,and the intelligent design of bench blasting was carried out combining with the actual situation of the site.Then,the design data was accurately fed back to the construction site through GPS technology to guide the site construction.The results show that the intelligent design software has strong adaptive ability,and the intelligent design based on GPS can improve the accuracy of design and drilling,reduce the bulk rate by 33%,improve the blasting effect significantly,realize the fine management of design and construction,and achieve the purpose of safe,economic and efficient mining.