Micro-abrasive jet machining technology is a type of abrasive erosion and wear machining technology based on high-energy fluid, which has been widely used in machining difficult-to-machine materials, complex threedimensional surfaces, and smooth surfaces. In order to further improve the ability of precise shape control in abrasive jet machining, domestic and foreign scholars have carried out many investigations on basic machining theory and technology exploration. Based on summarizing the development of abrasive jet machining technology, this paper comprehensively summarizes the main research results of domestic and foreign scholars in micro-abrasive air-jet machining technology. Such technologies include the divergence effect of micro-abrasive air-jet beam and its suppression strategy, the impact of material mechanical properties on material erosion removal mode, the abrasive embedding inhibition strategy in material erosion processing and the geometric characteristics of micro-structure erosion machining. Difficulties and the development trend of micro-abrasive jet machining technology are also investigated.