Abstract: Minthea rugicollis(Wallser),distributed in the provinces south of Yangtse River and in Taiwan,is one of the principal injurious in-sects of furniture and building construction woods.It has three generations a year in Hainan Island The first generation lasts 91.5+16.2 days,the second 93.8+14.4 days and the third 178.4+16.2 days.The beetle emerges throughout the year,with a peak from the end of March to the beginning of April.Minthca rugicollis(Walker) attacks about 80 species of woods.The more effective insecticide against it is boric acid and borax.The toxic limit of boric acid is 0.08—0.16% and of borax 0.16—0.32%.To treat the woods of building construction and furniture with the BBP mixture(borax 35%,boric acid 30%,sodium pentrachlorphenate 35%)at 6—8kg/m³,may get an enduring effect of protection of 10 years.At least also,it can be prevented with sodium fluoride,DDT and Permethrin.