This comprehensive textbook is designed specifically for university students studying soil and rock slope engineering. It provides a thorough understanding of the fundamental stability analysis methods and mechanics involved in designing and understanding slopes. The book covers both soil and rock slope engineering, offering a concise and unified approach to these two related fields. It outlines simple methods of stability analysis and applies them to a wide range of practical scenarios, making it an ideal resource for students and professionals alike. A brief introduction to relevant software applications is also included, providing a practical edge to the theoretical concepts presented. With its focus on getting the fundamentals right, this textbook is an essential resource for anyone looking to master the principles of soil and rock slope engineering.