Indoor environment is closely related to human health. Indoor air pollution has many kinds, wide pollution sources and complex influencing factors, which is extremely harmful to human health.

The harm of success is also multifaceted. With the warming of indoor decoration and the improvement of building tightness, the types and concentration ratios of indoor harmful substances

In the past, indoor environmental pollution has become one of the main factors that endanger people's health. How to reduce indoor environmental pollution has become a serious problem.

Today is an important issue. This paper mainly discusses the main sources and hazards of indoor environmental pollution, and expounds the purification mechanism and function of ornamental plants.

The selection of indoor ornamental plants was discussed from the perspective of indoor plant landscape.

Keywords: ornamental plants; Indoor pollution; Ecological efficiency