Human Genomes including genomes being effective and creative in all human behavior and physical changes have been adverted in last decade more than ever. The subject nowadays by identification of genomes’ functions and forecast possibility of their effects on aborning children and appearing the idea of prevention of their negative effects occurrence and even curbing of patient -physically and mentally- and premature humans birth is emphasized and many ethically and legally questions are formed. The official responses have been made two parts of dissidents and adherent opposing each other. Societies these days desire a healthy and free of maim, genetic abnormalities and severe diseases of the society. More chance for progress and attainment to scientific and industrial facilities will be achieved in addition of patients’ therapy and maintenance costs will be saved if society’s health and hygiene is supplied. So there is no doubt that every society’s public interests are requiring a healthy population and prevention of abnormal child birth. Ethics and law as two key elements for human life’s guide play a vital, guideline role in his general and decisive decisions. Therefore it has always been represented necessary that every new problem must be analyzed through them. At first this article is going to obtain an answer basing on analyzing of philosophical and Islamic law’s principles for the questions that between public interests and person’s tendency to farrowing abnormal child, which one has precedence? If public interests or on the other word society’s expedient can make a right for governments to prevent from abnormal and premature child? And most important than all of them, what command will be propound by moral and humanities rule? And it will be got to the result that being ethically and legally abnormal child’s abortion duration of his/her embryonic period can be taught. And more than it, we can go forward to make it mandatory.