Abstract: Chinese white wax scale have different adaptability to different host plants, and the state of secreting wax are not the same.It is reported in this paper that the secreting wax state of the insect on hosts of Ligustrum lucidum, Fraxinus chinensis and Ligustrum quiboni in Kunming area.The research results have shown that the average secreting wax amount of each male insect and each female scale and the secreting wax peaks are not the same depending on different female scales and hosts.The secreting wax period of the insect is not affected by the hosts on the whole.A comprehensive judging from the average secreting wax amount of each male insect and each female scale and the secreting wax period, L.lucidum is the best host of Ericerus pela in Kunming area.