The study aims to analyse the portrayals of Buddhist monks which appear in Thai films constructed by the compositions in the films made by the film's producer. The researcher has chosen the films launched from the year 1979-2003 as the sample group totaling 10 films in amount in order to analyze the portrayals of monks and their roles in the films, and then compares with the functions of real monks under the Buddhist laws. The result show that the portrayals of Buddhist monks can be divided into 9 types namely: 1) the portrayal of monks who give help to households and thus being depended on by them ; 2) the portrayal of monks who are calm and gentle ; 3) the portrayal of monks who are neither calm nor gentle ; 4) the portrayal of monks who are worried and anxious ; 5) the portrayal of monks who are leaders of the communities ; 6) the portrayal of monks who govern the households ; 7) the portrayal of monks who have virtue and the great merit ; 8) the portrayal of monks who caused trouble to the society ; 9)the portrayal of monks who have black magic. When comparing the roles of monks in Thai films with the function of real monks under the Buddhist laws, the result shows that it can be divided into 3 types namely ;1) the role of developing the society ; 2) the role of contributing to the people ; 3) the role of cooperating with the government service which is mostly not in line with the Buddhist laws but in agreement with social context.