This study aims to illuminate the computational fluid dynamics (CFD) analysis of municipal solid waste (MSW) gasifier. The gasification technology has emerged as one of the promising technology in treating the MSW. Waste-to-energy plants based on gasification are power plants that utilize MSW as their fuel rather than conventional sources of energy like coal, oil or natural gas. Gasification processes involve the reaction of carbonaceous feedstock with an oxygen-containing reagent, usually oxygen, air, steam or carbon dioxide, generally at temperatures in excess of 800 ℃. In this work, the study on CFD analysis of MSW gasifier was performed for pilot scale of 3 kg/hr. The model is based on the ANSYS package which represents a powerful tool that can be used in gasifier design and analysis. The results obtained from CFD analysis for the pilot scale gasifier were compared with those of the experimental results. The result obtained from the CFD analysis model agrees well with the experimental result.