The incrising demand for regulating social relations which are becoming more complicated is an efect of developing civilization, including in it the level of protection of human rights in XXI century. Standarization is a synonym of the nowadys developing world economy. Apart of the legal rules there are other regulation systems like moral standards, ethical standards, deontological norms or customs. These regulation systems are the complementary systems to the law regulations. Their origin is the natural law. Deontological principles mostly are legally binding like planty of ethical standards in medicine. The reason of the legal power of ethics in medicine is libility for human life. Code of Medical Ethics is also the source of legal norms in medical law. The most important legal norm for medical practice is the doctor’s obligation to treat patients acording to the current medical knowledge. Besides doctors should conduct their practice in a socially acceptable way as working in a profession of public trust.