Abstract: China is endowed with abundant collophane resources but poor ore quality, with a high proportion of medium and low-grade ores. The average mass fraction of associated rare earth elements (REEs) in collophane reaches approximately 0.046%, which forms an important rare earth resource. Due to the characteristic of abundant reserves but low grade, a large number of associated REEs are not effectively utilized. Therefore, the efficient recovery of associated REEs from collophane has important strategic significance for improving the comprehensive utilization rate of collophane and ensuring the supply security of rare earth resources in China. This paper reviews the research status and development trend of REEs extraction technologies from collophane from three core links, that is pre-concentration, leaching and separation. Beneficiation and pre-concentration is the key to reduce acid consumption. The flotation method exhibits excellent performance in removing carbonate impurities and synchronously enriching rare earths, while the combined process is an important means for treating fine-grained refractory collophane. In the leaching stage, the advantages and disadvantages of inorganic acid leaching processes such as sulfuric acid, nitric acid, hydrochloric acid and phosphoric acid were analyzed in detail. The results show that the traditional sulfuric acid process has a low REEs leaching rate of only 20%-65% and causes serious phosphogypsum pollution. By contrast, nitric acid, hydrochloric acid and phosphoric acid processes achieve a REEs leaching rate of more than 90%, but they respectively face challenges including difficult impurity removal, severe equipment corrosion and low leachate concentration. In the separation and enrichment stage, solvent extraction remains the mainstream technology for large-scale industrial application, while ion exchange, membrane separation and other technologies present unique advantages in treating low-concentration REEs solutions and improving product purity. Aiming at the current bottlenecks such as poor connection between mineral processing and metallurgical processes and low recovery rate, future research should further develop the integrated leaching-separation process. The development of mixed acid/surfactant/external field-assisted leaching technologies, high-capacity functional resins and acid-resistant selective extractants promotes the collaborative development of technology for associated REEs from collophane toward cleaner, more efficient, lower carbon and collaborative recovery direction.