The students’ problem in writing were the time and media limited. Because of those, students could not express and develop their idea, their understanding about text was less and the use of tenses was careless. The purposes of this study were to describe the implementation of using picture to improve the students’ ability in writing descriptive text and to identify the improvement of the students’ ability in writing descriptive text after being taught using picture. This research was conducted at seventh grade of SMP Plus Azzahro Pegandon. The research design was classroom action research that consisted of three cycles. Documentation, observation and test were used to collect the data. The result of the study showed that there was improvement of students; ability in writing descriptive texts after being thought using picture. It could be seen from the result of the test and observation from the first cycle to third cycle. The students’ participant in the whole teaching learning process got improvement in every cycle. The lowest score of students’ participant was 53, 33% in pre cycle. The highest score of students’ participant was 73, 33% in third cycle. The students’ participant in teaching learning process got improvement and it was followed by improving the students’ score in writing descriptive text. The lowest mean of students’ score in writing descriptive text was 52, 79 in pre cycle. The highest mean of students’ score in writing descriptive was 77, 03 in third cycle. Finally the research of this study showed that the implementation of using picture to teach writing skill could improve students’ ability in writing descriptive texts that was indicated by their improvements of each test result.