Abstract: In order to make efficient use of low-grade phosphate ore resources，the development sta⁃ tus and research progress of low-grade phosphate ore flotation technology are reviewed in view of the com⁃ plex problems of its associated gangue minerals. The characteristics of low-grade phosphate ore resources， the necessity of development and the distribution of global phosphate ore resources are briefly introduced. The flotation process，collector and foam control technology are mainly described.In terms of flotation pro⁃ cess，the positive flotation，reverse flotation，combined process and double reverse flotation process are summarized，and their advantages and disadvantages are analyzed. In terms of collectors，the research re⁃ sults of anionic collectors，cationic collectors and amphoteric collectors are summarized，and the effect of collector modification and compounding on improving flotation efficiency is emphasized.In terms of foam control technology，the synergistic effect of foam regulator and combined agent is emphasized. In view of the progress of reagent optimization，flotation process improvement and foam control technology，the future research direction is prospected，aiming at improving the recovery rate and resource utilization efficiency of low-grade phosphate ores.

Key words: low grade phosphate ores, flotation process, collector, foam control, reagent optimization