This research discusses the the implication the use of word wall media to develop students vocabulary For The Seventh Grade Of Mts Shiratul Ulum Kertomulyo, Trangkil, Pati In The Academic Year Of 2020/2021. The researcher found the phenomenon that most of students didn’t knows about vocabularies. Although they have learn English since Elementary School, they still have difficulties in mastering of vocabulary. This quantitative research is experimental desain. The researcher conducted the research in the 19th November 2020 until 1st Desember 2021 in the second semester. After collecting the data, it was found that the mean of VII A students using word wall media score was = 67,33, and the mean score of VII B students using word wall media was score 51,20. Based on the finding of the study, It was obtained that the calculation of the Sig. (2-tailed) in Experimental class is 0.050 , that is the same 0.05 (0.050 = 0.05), and in Control Class is 0.023 which is smaller than 0.05 (0.023 < 0.05). So Ho is rejected and Ha is accepted. It can be concluded that there is a significant difference between the students’ who using word wall vocabulary and non using word wall vocabulary. The finding using word wall media to enrich vocabulary showed that students enjoyed and very interested, support the idea that used word wall media has a positive impact on the students’ reading ability. The researcher discovered that the students were enthusiastic, fun and also enjoy while learning vocabulary. The writer recommends the students to improve their vocabulary, especially using word wall media.