The purpose of this study was to find out the difficulties of students in reading comprehension, and the factors of students’ difficulties in class Tenth SMKN 1 Rasau Jaya. The researcher used the descriptive quantitative method. Subject of this research were students SMKN 1 Rasau Jaya.
The data collection technique in this study was used measurement and indirect communication techniques. The instrument used are the reading test and closed-ended-questionnaire. The reasearcher gave the test 2 times, with 10 multiple choice questions for each test.
After getting the data from reading test, the researcher analyzed data by calculated the students’ reading test scores. Then the researcher categorized the students’ ability levels seen from the mean scores of students in the two reading tests. To find out students’ difficulties, the researcher calculated the percentage of students’ difficulties in five aspect of reading comprehension. Data from the closed-ended questionnaire was analyzed by calculated the percentage of answers from students.
The result of the show that tenth-grade students of SMKN 1 Rasau Jaya have difficulties in five of reading comprehension. Namely, determining the main idea, detail information, understanding vocabulary, making inference, and locating reference. The most difficult aspect for students is making inference with a percentage 30,65% and locating reference with a percentage 19,59%. Detail information 17,58%, understanding vocabulary 16,58%, Determining main idea 15,57%. The result of the questionnaire showed that students’ difficulties in reading comprehension are caused by 3 factors, namely: Lack of familiarity with reading material, difficulty in using reading strategies, and the last is limited vocabulary knowledge.
The conclusion in this research is that students fail in making inferences and locating reference. These two aspects are the most difficult aspects for students.

Keywords: Students Difficulties, Reading Comprehension, Descriptive Quantitative Method