The main objectives of this research are   to study the pattern of Buddhism propagation of Buddhist monks in Thailand to study the form of Buddhism propagation of Sangha in Muang District, Saraburi Province according to the opinion of the Sangha, and to study the problem and recommendations to Buddhism propagation of Sagha in Muang District, SaraburiProvince. The sample used in this study included 210 Sanghas in Muang District, SaraburiProvince by using a questionnaire to collect data containing general information about the respondents, opinions about the propagation of Buddhism in Muang District, Saraburi province, and open-ended questions. To analyze the data,  frequencies, percentage, arithmetic mean and standard deviation were employed.

The results of this study were concluded as follows:

              1. The pattern of Buddhism propagation of the Thai Sangha was practiced in conformity with the Resolutions approved by the Elder Sangha Association and Sangha Act. In these, the provision of training of the preachers and missionaries to Sangha adminstrators were carried out. Sangha shall be responsible for the spread of Buddhism in accordance with the provisions of Section 37/3 of the Act 1962(B.E.2505), amended in 1992(B.E.2535), i.e. the Section 37/3, Buddhist monks were  the leaders of thoughts, attitudes and values and teaches who pointed out the light of Dhamma to the people to behave righteously and live for the good practice principles and to be good citizens of society and the nation.

              2. The overall opinions of Sanghas towards the pattern of  Buddhism propagation in Muang District, SaraburiProvince were found at moderate level (X= 2.98). When considered in each aspect, it was noticed that all were ranked at moderate levels ranging from the keynote address and Dhamma talks, preaching, article and proverb  writings and Dhamma conversation.

               3. Problems and suggestions to the Buddhism propagation of Buddhist monks in Muang District, SaraburiProvince showed that:

              1) For preaching aspect: lack of personnel to preach Buddhism, Sanghas do not have sufficient knowledge of the sermon, take unsuitable time, do not have the skills to deliver.

              2) for Dhamma talks: lack of personnel with knowledge to show their ability,  time, opportunity, place and equipment are not conducive to Dhamma speech and talks.    3) For article and proverb  writings: lack of supporting funds. The motivation in writing the articles and saying is less. Lack of selection of the appropriate information. Proverb interpretation is less meaningful. Tools and equipment are not adequate.

              4) For Dhamma conversation: lack of knowledge and understanding of the problem, lack of equipment in electronic communications, lack of enlightenment tradition among Sanghas..