Abstract: "Synchronous filling" is a mining technology concept proposed by Professor Chen Qingfa in 2010 after the concept of "synergetic mining". In the past 10 years，Chinese scholars have made some gratifying progress in the theory and technology of this direction.In this paper，these developments are combed， analyzed and studied carefully，and the development direction is prospected.The study results show that there are four kinds of "synchronous filling" mining methods proposed in the field of metal mine，which have significant advantages compared with traditional mining methods in improving ore recovery rate，reducing loss and dilution rate， maintaining stope stability， etc.；There are also mining technologies named "synchronous filling" in the field of coal，but their essence is different from the connotation of "synchronous filling"，they should belong to the category of "single layer filling" or "follow-up filling".New progress has been made in the study of synchronous filling and drawing theory， forming a relatively complete set of loose medium flow theory under the flexible isolation layer. Finally， the development direction of "synchronous filling" is prospected from four aspects: practical application， technological innovation， theoretical research and mechanical equipment.The above study results are helpful to further understand the essence of "synchronous filling"，and promote the relevant research and engineering practice. Keywords Synchronous filling，Synergetic mining，Study progress，Development direction

Key words: Synchronous filling, Synergetic mining, Study progress, Development direction