Insect pest complex of muga ecosystem was studied under the agro-climatic conditions of Narayanpur, North Lakhimpur inorder to develop a suitable pest management strategy. During the present investigation as many as 16 (sixteen) different insect pests belonging to 10 orders and 13 families were recorded infesting on silkworm, Anthereae assamensis Helfer as well as the muga host plant, som, Persea bombycina throughout the year. The insect pests infesting the silkworm belongs to the family Tachnidae, Braconidae, Formicidae, Pentatomidae, Ichneumonidae, Vespidae and Mantidae whereas the insect pests infesting the host plant, Som belongs to the family Cerambyciidae, Scarabaeidae, Saturniidae, Aphidiidae, Cecidomyiidae, Thripidae and Hodotermitidae.