The thesis was a study of life and works in Phrakrubisaldhammabhani’s Buddhist propagation (Somdee Suvaṇṇo) at Wat Santivanarama, Banchieng sub-district, Nonghan district, Udonthani province. The main purposes of this thesis were to study life and works, the factors in his success for Buddhism propagation, the ways to propagate Buddhism, and the result of propagating Buddhism done by Phrakrubisaldhammabhani. This thesis was the qualitative research that stressed on studying documents and data collected from the field work. Then, all collected data would be analyzed and concluded with some suggestions. The result of the present study was found that Phrakrubisaldhammabhani(Somdee Suvaṇṇo) made many creative works for Buddhism. 

He created the Buddhist works and was successful in various aspects such as 1) Sangha affair administration, education, Buddhist propagation, public assistance, social service and educational service 2) books writing 3) field trip abroad
4) environment preservation. But the Buddhist propagation and public service was prominent works. The factors to make his works success were good personality, clever to select Dhamma suitable for the listeners, good in using media, follow the scholars, intent to spread Dhamma. He was pleased by people. 

            His ways to spread Buddhism was from an easy and closed thing to difficult and deep one. He employed many teaching methods: an example, telling a story, comparison, Buddhist proverbs, general proverbs, epigram, epic, and poems with the easily-understood language.

The result of studying  Phrakrubisaldhammabhani’s propagation of Buddhism was possibly divided into the three following aspects.

            He instructed people about Buddhism that caused the quality of life, beliefs, views, ideas, and behaviour from wrongness to right.

            He put the public faith in Buddhism. He started instructing a person, a family and a society orderly. Most of people learned clearly to bring the material growth to mental development, the resolution of economical and administrative problems, and the creation of the human society’s stability, peace and happiness.

            He made people conscious of the Buddhist value as something that could make the human society peaceful and happy. He also made people conscious of supporting and spreading Buddhism towards a wider area of the world and possessive of Buddhism through keeping it for human societies eternally.