Rice is the staple food of more than half of the population of the world, is an important target to provide food security and livelihoods for millions. Weeds grow and dispersion patterns in rice fields are dynamic in nature. The survey of weed flora was conduct in Bilaspur district region of Chhattisgarh state to identify problem of weed species in the rice field. The survey has been carried out of four selected site in rice field. During the study and survey of weeds plant in rice field have been done in the month of August to September 2021. Climatic conditions are generally wet and humid type in this region and rainfall is average. The result of this survey has obtained 41 weed species belonging to 29 Genera and 10 families. Dicot /monocot ratio of weeds is 23/18 and Genera / Species ratio are 29/41. Dominating Weed families in the rice fields of study site in Bilaspur district are Poaceae, Cyperaceae, Asteraceae, Euphorbiaceae, Amaranthaceae, Oxalidaceae. The highest number of weed species in rice field of study sites is form poaceae family belonging to 8 genera and 12 species and less weed species is from Oxalidaceae, Rubiaceae and Verbenaceae families belonging to 1 genera and 1 species. The study was based on survey of weed species in rice field of Bilaspur district (C.G.).