At present, the development and function research of lawn has become diversified, and the application of lawn has been extended from outdoor to indoor environment. The indoor lawn has functions of absorbing toxic and harmful gases, releasing oxygen, increasing air humidity and regulating temperature. It can effectively improve the indoor air quality of northern areas, purify and beautify the home environment. This paper elaborated the purpose and significance of the application of new indoor lawn, the establishment methods of the indoor lawn, and the application design of the indoor lawn landscape.