To actively respond to the new requirements for talent cultivation in new fields and new industries, China has made great efforts to promote new engineering education in recent years. Under the background of new engineering, cultivating students’ interdisciplinary learning and interdisciplinary knowledge migration ability, so as to realize the ability of interdisciplinary innovation, has become one of the main goals of talent training. Combined with the teaching reform practices carried out by the landscape architecture major of Southwest Jiaotong University, this paper analyzes the complexity of interdisciplinary ability training in terms of specialty particularity, curriculum system uniqueness and teaching environment limitation. Then, it expounds on the way of interdisciplinary ability training, such as updating teaching concepts, constructing a student-platform-teacher trinity talent training system, improving knowledge system, refining training process, establishing multiple scientific evaluation methods and so on. Finally, the development trend of interdisciplinary ability training of landscape architecture is discussed, including establishing scientific concept of human settlement environment, highlighting disciplinary advantages and platform resources, and strengthening key training links.