To study the hot air drying characteristics of Antarctic krill and establish a drying model. Methods: Using frozen Krill as raw material, the effects of different temperature and drying quantities on the drying time and drying rate of krill were studied, and the effective diffusion coefficient and drying activation energy of krill were analyzed under different drying conditions. Five drying models, Lewis, Henderson and Pabis, Page, Modified Page, Wang and Singh, were used to fit the test data. The optimal drying model was determined and validated with the determination coefficient R2, Chi-square test value X2, root mean square error M and error square sum S as the evaluation indexes of model fitting effect. Results: The drying time was shortened and the drying rate increased with the increase of temperature or the decrease of drying quantities. The influence of drying amount on drying time and drying rate was less than that of temperature. When the temperature was 50 - 100℃, the effective diffusion coefficient of water was 1.459×10-8 - 6.310×10-8, and the dry activation energy was 29.599 kJ/mol. When the drying amount was 0.5 - 3.0 kg, the effective diffusion coefficient of water was 4.63×10-9 - 3.533×10-8. By comparing the fitting effect evaluation indexes of the five models, it was found that the Page model had a high R2 value and a low X2, M and S value, which could better fit the test data of Antarctic krill. The predicted value of the model had a high coincidence degree with the test value, and it could accurately predict the change law of water ratio in the hot-air drying process of Antarctic krill. Conclusion: Increasing the temperature or decreasing the drying amount can shorten the drying time and increase the drying rate. Page model can accurately describe the hot-air drying process of Antarctic krill, and provide theoretical basis for the prediction and control of hot-air drying process of Antarctic krill.