Abstract:This study used fresh Pandanus amaryllifolius leaves as raw materials，and dried P. amaryllifolius leaves by four drying methods：natural drying（ND），hot air drying （HAD），vacuum freeze drying （FD），and microwave drying （MWD）. The physicochemical properties and functional material of P. amaryllifolius leaves obtained by different drying methods were studied and analyzed. The results showed that the rehydration ratio，bulk density，angle of repose，slip angle，and particle size distribution of P. amaryllifolius powder by the different drying methods were significantly different. Specifically，MWD and FD effectively maintained the original a* value of P. amaryllifolius leaves，and there was no significant difference compared to the a* value of fresh leaves. The surface microstructure of FD samples was the smoothest and most intact，and there were significant differences in the surface microstructure of FD samples across different drying treatments. The total phenolic content of FD and MWD P. amaryllifolius powder was higher. In general，there were significant differences in color，powder properties，and total phenolic content of P. amaryllifolius powder treated with different drying methods. FD is superior to other drying methods in terms of color，powder properties，surface microstructure，and total phenolic content. FD was the most suitable drying technology for P. amaryllifolius powder，despite its longer drying time and higher energy consumption. The results of this study showed that the color，total phenols，and other indicators of MWD P. amaryllifolius powder were favorable than ND and HAD treatment，and MWD could also be used as a viable alternative drying method in the drying process of P. amaryllifolius powder.