Abstract:The hot air drying experiments for macadamia in-shell nuts were performed ，the moisture content， acid value and peroxide value were described by hot air temperature on Macadamia in-shell nuts， drying dy－ namics equation was established. The results showed that the hot air temperature was higher， the faster the dry－ ing， the higher the drying rate. The acid value and peroxide value of in-shell nuts were not significant changed， nut products were good quality. The experimental data were fitted to the Page model， tunnel drying characteris－ tics were described for Macadamia in-shell nuts ，using the mathematical equations .This was provided a theo－ retical basis for Macadamia in-shell nuts drying production.