The core of PAD Class model is to allocate half of the class time for teachers to teaching and the other half for students to discussion and stagnate the teaching and discussion time so that students can have independent learning time after class, which is conducive to students’ personalized internalization and absorption, prompting students’ independent learning and driving students’ interest in learning. This article is based on the PAD Class model to explore the teaching design of English reading in junior middle school. Combining the definition of PAD Class model, the literature of PAD Class model and English reading in junior middle school at home and abroad, the teachers will apply this model into teaching design of English reading in junior middle school. This research investigates the changes in students’ English reading experience before and after the application of PAD class model through questionnaires, and obtains corresponding arguments through follow-up in-depth interviews with teachers. In the data obtained from the questionnaire and the interview records, the author explores and refine the impact and effect of teaching design of English reading in junior middle school based on PAD Class model.