Abstract:In order to explore the species of balcony greening plants suitable for the elderly at home,we use the method of network text analysis, combined with literature research, selects three flower culture exchange forums of domestic flow- er encyclopedia, step flower line and zanghuage, crawls and processes the comment data by using python, rost-cm, gooseek- er and other related technology software, and analyzes the word frequency after text segmentation Emotion analysis and semantic network analysis . The results show that the elderly》s evaluation of balcony plants focuses on five dimensions : plant status, perception of plants , horticultural management, emotional expression and time environment ; ornamental, safety, adaptability and healing are the important contents to be considered in choosing the suitable aged balcony greening plants;27kinds of plants suitable foraging are selected, including 7kinds of biennial flowers,8kinds of perennial flowers , 4 kinds of bulbous flowers,1kind of aquatic flowers and 6 kinds of woody flowers .