This thesis is of 3 objectives,namely:-(1)to study The Kāmachanda Nīvaraṇa appearing in Theravāda Buddhist Scriptures, to study the method of solving the problems of Kāmachanda Nīvaraṇa appearing in Theravāda Buddhist Scriptures and (3) to study the application of the method of solving the Kāmachanda Nīvaraṇa in the Thai societies.

This research in carried out by deeply interviewing the fire teachers of Insight Meditation and the ten Dhamma practisers at Wat Mahadhatu Yuvarajarangsit, in Bangkok. From the interview, it is found that Kāmachanda Nīvaraṇa appearing  in Theravāda Buddhist  means the state which prevents the mind from thinking of goodness or attaining the Dhamma. It means the pleasure the sound, the smell, the taste, and the touch arising through the eyes, the nose, the tongue, the body and the mind. They are the lovely temperaments which caught the mind up to the state of not being able to reach the goodness or the attainment of the Doctrines: the concentration, the Insight, the Path, the Fruit and Nibbāna. When the sexual hindrance overcomes our minds, it will cut off our wisdom and cause the insight wisdom and the path wisdom not to arise to us, but it causes the root of badness called “Akusalamūla” to arise,  that Kāmachanda Nīvaraṇa has Ayonisomanasikāra (the state of making ones mind) in a bad thing as a good one. that Kāmachanda Nīvaraṇa is in the group of the defilement of Lobha (greed) which is of 2 tyes:- the love arising with one’s own five aggregates and the love arising with other’s five aggregates. Moha, delusion, Is the cause of the Kāmachanda Nīvaraṇa on the side of the inside factor. The 5 Kāmaguṇas are the states causing the love to arise. They are the cause of that Kāmachanda Nīvaraṇa as the outside factor.

The method of solving the problems of Kāmachanda Nīvaraṇa appearing in Theravāda Scripture is as follows:- The Development of the 4 Satipaṭṭhānas, the explanation of the bad effect of Kāma and the good effect of being ordained, The solution of the problem of Kāmachanda Nīvaraṇa with Yonisomanasikāra in Asubhamimitta and the Development of Samathakamanaṭṭhāna up to attaining the Samathakammaṭṭhāna up to attaining the state of one-pointed-ness which is the composition of the four formal ecstasies (Thana). The Doctrinal principles and the practical principles in solving the problems of  that Kāmachanda Nīvaraṇa are the principles of Apannakapatipada dealing with the 3 principles of right practice, the 4 principles of  Sammappadana or Padana of 5 Indriyas, 5 Palas, 7 Bojjhaṅgas, Samatha- Kammaṭṭhāna and Vipassanā-Kāmmaṭṭhāna. After the extinguishing of  Kāmachanda Nīvarana, a man will be pure, and will have wisdom knowing clearly one’s own and others’ benefits. Moreover one can attain the four states of Jhana, the four Foundations of mind sevenbojjhaṅgas, six abhinnas, eight knowledges, 7 purities and 16 ecstacies and  finally can attain Nibbāna.

The application of the method of solving the problems of solving the problem of  Kāmachanda Nīivaraṇa, if it is not controlles, will cause disadvantage to societies, because the shown Kāmachanda Nīvaraṇa will be the rough dedfilement causing the troubles to arise to the societies without the end.

The way to solve the problems arising from Kāmachanda Nīvaraṇa is to have mindfulness or to develop the Insight Meditation called Bhāvanā which means the training of one’s mindfulness or the development of Insight Meditation which causes a person to know the things as they really are. Then a person  can solve all his problems and can fine the way out with safety.