Abstract: The integrated in-depth learning teaching design of mathematical unit refers to the practice in which, under the guidance of holistic thinking, the teachers based on the core literacies of the mathematical subject, can analyze the course standard, teaching material and students accurately and comprehensively; besides, the students can form coherent and rigorous logical thinking (method) in self-understanding, and use this thinking (method) to further analyze (solve) new mathematical problems and conduct unit teaching design.This paper takes the key teaching nodes of "Surface area and cubage of cylinder, Cone, cone frustum and ball" as an example, and combs out the characteristics of the teaching design of the mathematical unit integrated with in-depth learning, and puts forward the five strategies for teaching design of mathematical unit:in-depth analysis, in-depth participation, in-depth understanding, in-depth optimization, and in-depth internalization, with detailed elaboration given for each.