The traditional 50℃ and 60℃, low humidity drying 50℃ and 60℃ drying methods were used to dry day-lily (Hemerocallis fulva L.) products in order to study the drying characteristic curves. Also, the rehydrated crispness, solid content and color of the products were tested to investigate the optimal drying method for day-lily farmers. Experimental results showed that the drying time for the traditional 50℃ method, low humidity drying 5℃ method, traditional 60℃ method, and low humidity drying 60℃ method were 16h, 15.5h, 11.5h, and 10h, respectively. The equilibrium moisture content for traditional the 50℃ method, low humidity drying 50℃ method, traditional 60℃ method, and low humidity drying 60℃ method were 5.75%, 6.94%, 5.21%, and 5.04%, respectively. However, the drying time and equilibrium moisture content of the market sold day-lily products were 12h to 24h and 15%, respectively. The maximum biological yield point for the traditional 50℃ and low humidity drying 50℃ methods was 12.21 MPa and l.58MPa respectively; whereas, the maximum biological yield point for the traditional 60℃ and low humidity drying 60℃ methods was 1.61 MPa and I ,54MPa, respectively. However, the maximum biological yield point of the market sold day-lily products was l.89MPa. The color change of the low humidity method was less than that of the traditional one, which meant the quality of the low humidity method was more stable. Moreover, the value of the color change between the low humidity method and the product sold at market had no significant difference. The loss of the solid content through the low humidity method reached the minimum, whereas, the market sold product reached the maximum. Overall, the drying time of the day lily dried by the low humidity method was shortened without losing the crispness and the color was better than the traditional method. Also, the loss of the solid content was lower than the market sold product. Therefore, the low humidity drying method was the optimal drying method recommended for the farmers.