说明：  The food security problems which occurred more and more in recent years seriously influenced people’s normal life. Government and some castes increased their supervision ability gradually about the food security problems and some related law and rule were established. Food impurity is one of the food security problems. Manufacture enterprises cry for a quickly and non-destructive detective equipment to check their packaged food. But at present the equipment is depended on import. This paper researched the market background and united the requirement of an important big project of Shanghai agriculture government, which is the research of X-ray food impurity detective equipment. In this paper, the author researched the key technologies and developed X-ray non-destructive detective equipment, which has an independence knowledge property right.