Abstract:Heat pump drying rate curve and drying characteristic curve of silkworm pupa were acquired by analyzing influences of drying temperature and traying density on drying characteristics，the heat pump drying kinetics model of silkworm pupa was set up.The results indicated that there were three stages of accelerated drying，constant speed drying and deceleration speed drying in the heat pump drying process of silkworm pupa.The drying speed was faster and the drying time was shorter of silkworm pupa，under higher the drying temperature，smaller the traying density.The heat pump drying model of silkworm pupa conformed to the Page model，it was verified that the experimental value of the model fit well with the predicted value，and could be used to describe the predicted moisture ratio of silkworm pupa at any time during the heat pump drying process.