Abstract:A low hygroscopic polymer composite capsule was prepared by different ratios of carrageenan/konjac blending and low cross-linking.The materials were characterized by viscometer，scanning electron microscope and capsule hardness tester.The results showed that the directly blended composite capsules were colorless，odorless and highly transparent.At the same temperature and speed，solution viscosity increased first and then decreased with the increase of konjac content.The optimal compounding mass ratio was 3 ∶1，and viscosity was 589 mPa·s，and the capsule was made by pill dropping machine，with a crushing strength of 15.4 N.After adding the crosslinking agent，the viscosity of the system gradually increased，and the crosslinking was achieved.When the proportion of the agent was added to 2.5 %，the viscosity of the system was increased to 890 mPa·s，with a crushing strength of 24 N.The moisture absorption performance test showed that the hygroscopicity of the material was greatly affected by the environment，and when the humidity was increased，the water absorption amount at the time of water absorption balance was larger.However，the water absorption rate of the material decreased significantly after the addition of the crosslinking agent.