Abstract
There is a possibility that long term enteral nutrition will cause trace element deficiency. On "6th revision" , contents of trace element was adopted for the first time. Cu1. 4-1.6, Zn10-11mg, Se40-50µg per day. Our research showed the result that Cu0.5-1.0mg, Zn10-15mg, Se50 per 1000 kcal are enough to maintain serum level." Dietary Reference Intakes(DRI)for Japanese, 2005 "recommends that Cu0.7, Zn7mg, Se25-30 per day. 2005 is a standard for normal person. Trace elements such as Zn, Se will not enough for patients under long term enteral nutrition, if we follow this standard. So, we need to make another standard.