Facing the multi process manufacturing of complex and changeable parts,the clamping process planning based on traditional manufacturing manual experience can not meet the requirements of flexibility,compounding and intelligence requirements of modern manufacturing system.In the modern multi process manufacturing system for mass customization and mass production,clamping process planning is the key.The establishment of parts digital information model,feature process setting,manufacturing resource capability analysis,clamping process specification generation,and flexible NC process device (also known as flexible fixture) design,were reviewed.The future development and application trend was prospected.