Abstract
On 2. 17. 2006, the German Medical Association prescribed “(Muster−) Richtlinie zur Durchführung der assistierten Reproduktion Novelle 2006 (the guideline for assisted reproduction)”. This guideline binds doctors. On the oher hands, Japanese institute of gynecologist can not restraint doctors, even if they prescribe guidelines. That is to say, a doctor can continue his activity as doctor, even if he offends against the guideline. Why is it? Where does this difference come from? Let us see the system of German Medical Association.