The objectives of this study on “The Satisfaction of People towards the Service Applying the Four Sangahavatthus by Registration Department, Muang District Office, Nakhon Sawan Province were to 1) study people’s satisfaction towards the Registration Department services; 2) make comparative study on satisfaction of various status of people; 3) discover problems and their solution applying the Four Principles of Service.  The samples in this study comprised of 291 service users gathered by random sampling.  The data gathered was carried out by using questionnaire.  The data analysis was done with Social Science SPSS.  The statistics used were values of frequency, percentage, mean, standard deviation, hypothesis test with T-test, one way ANOVA and comparative pair differentiation.

 The study results revealed that the people’s satisfaction towards services in average was at high level ( X  = 3.62).  According to each item of analysis, it turned out that people’s satisfaction towards Impartiality of the Four Objects of Sympathy was at the highest level (X = 3.75) and towards Pleasant Speech was at the lowest level (X = 3.41).

When comparing various personal differentiations of the samples, it showed that people with different sexes and education showed different levels of satisfaction with the statistic significance at .05 level.  Different ages and careers did not show any statistic significance.

According to problems and solutions towards satisfaction applying the Four Principles of Service among Registration Department officers, it revealed that people were not clear on process and suitable service time of the Office.  Also it showed problems on officers’ coordination, inadequate parking places, unpleasant speech among Registration personnel, lack of enthusiastic to help, and service with bias among officers.  The data analysis showed that people were not satisfied towards the services.  It was recommended that service improvement should be performed; Office personnel should be more active and motivated in work.  The training involving ethics especially training on applying the Four Principles of Service should be introduced.  The officers should know how to apply Giving, Pleasant Speech, Life of Service, equality consisting in Impartiality of the Four Principles of Service to their work.  Besides, the Registration officers should concern flexibility, satisfactory service and impressiveness provision while they were servicing people.