This book investigate errors in paragraph writing of the EFL learners and classifies these errors. Then suggest remedial measures to overcome the committing of errors. Key words of this books are Error analysis, Paragraph writing, Writing difficulties. This book assist instructors and syllabus designers focus on grammatical errors, help the EFL students to improve their paragraph writing, make a distinction between topic sentence, supporting sentences, and concluding sentence. One of the important characteristic of the book is to reveal the EFL learners difficulties in supplying correct grammatical rules in paragraph writing.