Abstract:Amber is a kind of organic substance made of pine resin formed by the geological process in Mesozoic Cretaceous-Cenozoic Tertiary strata. Currently, there are many amber localities all over the world, such as countries along the Baltic Sea, Mexico, Dominican Republic,Fushun in China, Kuji and Iwaki in Japan, Thailand, Australia, and New Zealand. However, the burmite from Myanmar is the only Cretaceous amber with commercial value. The principal resource of burmite is in the Hukawng Valley, which is situated between Myithyina and Tanai in Kachin State. In this study, LEICA M125 stereoscopic microscope of China University of Geosciences (Beijing) and LEICA EZ4D microscope (equipped with camera) of Insect Research Laboratory in Beijing Forestry University were used to observe the inclusions of the burmite sample. About 20 inclusions were observed, which belong to 15 species of Arthropoda. Most of them belong to insecta, like the Tenthredinidae of Hymenoptera and the Tipulidae of Diplura. However, some species remain undetermined.