          The objectives of this research were: (1) to study the operation problem of mill operators in the eastern part of Thailand, as in the following aspects: production problems, financial problems, marketing problems and the external environment effect problems and, (2) to compare the manufacturers background variables (such as the size of the business, the ownership pattern and the established time) with the difficulties of operation problems which were production problems, financial problems, marketing problems and the external environment effect problems. The data were collected from 67 manufacturers of mill operators in the eastern part of Thailand by likert scale questionnaire. The questionnaires reliability was at .91. The mean, standard deviation and One-way ANOVA were analyzed by computer program.
	The research results were as follows: 
	1. The operation problem as a whole was at a moderate level. The ranking order of the operation problem from the highest to the lowest were as follows:  production problems, the external environment effect problems, marketing problems 
and financial problems. 
	2. A significant difference of the comparison of the manufacturers background variables that involved with size of business, ownership pattern and established time was found at the 0.05 level.
