WAN SHAN Min Xiong set up a system of experimental ethics or pure theory of ethics round the living principle of unity of morality and happiness.

In Hegel s theory of moral philosophy,ethical entity is a system of dialectical development,that is,the evolution from the stage of family,the stage of civil society,to the stage of state.

From the view point of ethics,the scientific community is an ethical entity and its ethical character is ethical spirit,in which "the single and the common" become united.

In China, “unit" as a basic social organization and an ethical entity typical of the age of planned economy, has long been a basis and premise on which the social ethical relationship and ethical order were established.

After researching the origins of those ethical problems,the paper puts forward corresponding ethical principles to direct the ethical practice of genetically-modified crops,so as to ensure the research and application of these crops will be developed favorably for human beings and ecology environment.

From the viewpoint of ethics, it is the rational response of ethical practice and the distillation of the ethical theory.

But utilitarianists has expounded and developed its doctrine in controversies, especially has recently advanced many new arguments in practical ethics, such as abortion, euthanasia and environmenta.

Engineering ethics are both a kind of professional ethics and practical ethics.