This essay analyzes the forbearance on the chemical weapon’s usage in the civil wars then will apply its results on the impacts faced by the ordinary citizens after the wars of Syria. Use of weapons made up of dangerous chemicals is absolutely banned in the international armed crash, which is clearly mentioned in “the international humanitarian law and international criminal law”. This prohibition is not that clear in international armed conflict act, which suggests the needs of legal reforms that are to be banned firmly upon the usage of these dangerous weapon in every armed disputes. Further it is observed that Syria itself did not crossed the red line which was legal for rationalizing the military intervention. Rather, the use of the chemical weapons are just the components which determines the crises which are existing in the humanity which requires strong international action.