This is a qualitative research it consists of three objectives: (1) to study the problems and causes of nuns in practicing the four sublime states, (2) to study the concept of the four sublime states (Brahmavihara) in the Buddhist texts, and (3) to apply the way of application of the four sublime states doctrine in the daily life of nuns. The results show the problems of nuns to practice the four sublime states and causes that nuns make in practicing the four sublime states. the four Brahmavihàra are the most standard higher virtuous teachings of the Buddha which are conducive to attain Nibbàna and it has shown that a practical method of the four Brahmavihàra with appropriate processes. It has also given of their individual context in order to know their distinction and distinguished characters of the four Brahmavihàra. in order to make an ideal society by the solution of the problems, issues and conflicts, the people should follow the bright instances: the teaching, their ideal characters from the well-known people and from the Buddha's teachings.