Nano-suspensions drug delivery system is used as a novel approach to improve the solubility and bioavailability of indissoluble substance of Chinese medicine. Re-dispersible solid nanosuspension drug delivery system is an ideal choice to achieve stability. However, the questions remain whether after solidification, the particle is still at nano-meter scale, with satisfactory re-dispensability With the aim to optimize the theory and application of the nano-suspensions drug delivery system, this paper provided the latest research status quo and analysis of research strategy.