The purpose of this study is to explore the factors that cause EFL freshman students’ demotivation while learning English in their high school days. Two hundred twenty four freshmen participated in this study. The demotivation questionnaire was administered. The analysis results showed that the most affective factor causing demotivation of English learning was teaching methods which were mainly given for the college entrance examination. In addition, a grammar-centered lesson was the second most influential demotivational factor. Memorizing vocabularies, phrases, and sentences was also reported as the third most affective demotivational factor. The overall and vocabulary score was negatively correlated with factor 1 (test score, lesson pace, self-regulated learning ability, sentence difficulty, understanding of teachers' explanation), factor 5 (learning load, low endurance of uncertainty), and factor 6 (memorization ability, regulation of English learning purpose, chance to communicate). Reading scores were negatively correlated with factor 1 and factor 6, while listening scores were correlated with factor 1. Some educational implications were suggested to design English courses to remotivate students' English learning.