The development of major equality has continued and long the country has been derived from the international system it can be seen that the development of such a gradual manner until the constitution of the Kingdom of Thailand in 2540. has evolved drastically. By adopting the concept of equality in international law, equality, the main rival to progressively grown stronger. But at the same time to understand the concept of equality, to make such principles. Applicable to concrete results which would be protected under the principle of equality itself.