The purpose of this study is to study the statement of problems in English writing and its relevant factors. The population and sample are students in the faculty of Business Administration in Business English Program Rajamangala University of Technology Phra Nakhon. The samples were 116. The research methodology is suNey research which is mixed method using both qualitative and quantitative method. The research instrument is questionnaire in English writing problems. The analysis of data conducted both descriptive statistics which are frequency percentage average and standard deviation and inferential statistics which are student-t and F statistics to analyze pair statistical differentiation of Shaffe method and the analysis of correlation coefficient. The results of the study can be depicted as follow: the highest frequency of the sample are sophomore students the high school grade of 12 average GPA in the range of 2.50-3.50 having experience in a Language school. The descriptive statistics of the sample parents are self-employed average monthly income of 30000 baht. The results about English writing problems are: incentive to write English at a high level English writing problems of overall sample at a high level. Sort the problems as follows: sentence structure grammatical and the use of words. Factors related to the writing problems in English showed that gender and parents occupation are statistically significant at 0.05 in writing English. The motivation to write English is related to problems in writing English without statistical significance.