Abstract:Gelatin as the main material of edible and degradable packaging，due to the recent food safety and personal religious beliefs，so that the traditional gelatin can not be a large number of applications，is the urgent need for new gelatin material research and development.It is urgent to study and develop new gelatin materials.In order to find the most suitable gelatin film，the film formation of chicken skin，rabbit skin and salmon gelatin was determined by blocking property，water solubility，mechanical property，infrared spectroscopy and thermal stability analysis.The results showed that the water vapor permeability，water solubility and oxygen permeability of the film made of rabbit skin was the lowest and it also showed good mechanical properties.The thermal stability of the chicken gelatin film was better.There was no significant difference with the rabbit gelatin membrane.The results showed that the absorption peak of amide A band of rabbit gelatin was the lowest，which indicated that the content of hydroxyproline and proline in rabbit gelatin gelatin was higher than that of amide I.The content of the three-helix structure was more，and the glycerol-specific peak indicated that the glycerol had more crosslinking with the rabbit gelatin film.Therefore，the performance of rabbit skin film was better than the skin and chicken skin gelatin film，could be used as a new gelatin membrane material.