The present study was conducted for a quantitative investigation of macrophytes of the Jharokh wetland of the Gorjaan wetland system of Hajo area of Kamrup district of Assam , during March 2015 to February 2016. During the investigation, 140 different species of macrophytes were recorded in pre monsoon and 60 species in winter from the wetland.While the number of free floating, rooted floating leaved and submerged species are almost same in both the seasons of the wetland, the number of emergent species vary in both the two seasons i.e 80 in pre monsoon and 38 in winter in the wetland respectively.Based on Importance Value Index (IVI) Eicchornia crassipes (Mart.) Solms, Eurayle ferox Salisb, Ludwigia adscendes (L.) H.Hara, Hygroryza aristata (L.f.) Royle,Cyanodon dactylon and Hymenachne acutigluma (Steud) Gill, Leersia hexandra L. , Lemna minor, Ipomea carnea var.fistulosa were dominant species in pre monsoon whereas Eicchornia crassipes (Mart.) Solms , Ruppia maritima, Myrophullum alterniflorum,Chara vulgaris,Ceratophyllum demesrsum (L.),Nelumbo nucifera Gaertn, Nymphaea nouchalli Burm.f.,Nymphoides indicum (L.) were dominant in winter.