This paper introduces the characteristic of new packaging material which is green,environ-ment-friendly and edible,classifies the material by preparation materials,and discusses the problems and developing trend of edible packaging material.

school-based implementation of new chemistry curriculum for senior middle school is a practical process in which the national chemistry curriculum is transformed to school-based courses as chemistry curriculum standard is complied and the characteristic and conditions of different middle school is considered.The external conditions of school-based implementation of new chemistry curriculum for senior middle school includes the revision and improvement of national chemistry curriculum standard,and the support of local governments and normal colleges.Its internal operations can begin with the school-based teaching objective,the school-based teaching content,the school-based teaching mode,the school-based teaching evaluation and so on.