The objective of this research is to find out the most typical errors which are made by the students in writing. Based on the objective of the research, the writer used a descriptive method. In collecting the data, the writer administers a kind of writing test to students. Then, the writer analyzes the writing errors done by the students. The research was conducted pre intermediate class, consisting of 20 students of the pre-intermediate grade of EZ (English Zone). The material tested is based on the English curriculum for descriptive writing. It aims to analyze the errors in writing done by the students through the grammar aspects. The result of the research show that errors on articles is the most typical errors made by the students at EZ (English Zone) with 56,31 % and followed by singular plural with 23,30 % and capital letters with 20,39 %. From the results of the research, the writer brings to the conclusion that the most typical errors on students? English writing skill at the Pre-Intermediate grade of EZ (English Zone) are errors on article. It indicates that most students need more treatment and remedial teaching from the teacher towards their errors on English writing right away and it implies that the Pre-Intermediate grade students of EZ (English Zone) English Course Tangerang still need more practice in order to develop their writing skill.