Abstract: In order to find out the harm of scale insects on garden plants in Panzhihua city and to understand the species and occurrence regularity of scale insects, regular investigation and random sampling were conducted to investigate and study the scale insects in the built-up areas of Panzhihua City. The results showed that there were 16 species of scale insects in the garden plants in the built-up area of Panzhihua City, among them, Phenacoccus solenopsis Tinsley, Aulacaspis yasumatsui Takagi, Icerya purchase Maskell, Pseudococcus adonidum, Ceroplastes japonica Green were more harmful.