Abstract: Diseases and insect pests are important factors affecting the quality of landscaping. It is very important to strengthen the prevention and control of diseases and insect pests and scientific maintenance. The purpose of this paper is to explain the characteristics of plant diseases and insect pests in landscaping, on this basis, put forward the means of plant diseases and insect pests control and scientific maintenance methods of landscaping, in order to improve the quality of landscaping and improve the environment of landscaping, provide feasible reference suggestions.