Phenacoccus solenopsis Tinsley is an important alien pest which has invaded China since 2008. P. solenopsis has been found in 13 provinces, and was first detected in Yunnan Province in 2009, and by March 2013, P. solenopsis was found at 10 sites belonging to 8 districts. The complicated topography, diverse climate, presence of diverse ecosystem types, the frequent distribution of flowers and vegetables in import and export trade make the province vulnerable to further spread and damage by this pest. However, there is still a lack of research on P. solenopsis in Yunnan Province. This paper summarizes the occurences, potential risk in Yunnan Province and available management measures.