Abstract: Energy demand is becoming increasingly prominent problem,many countries have taken the research on the degradation of cellulose as an important research project.The enzymatic degradation of cellulose is an effective way to utilize cellulose.In this research field the fungal cellulase research is becoming mature at present.The fungal cellulase activity is normally relative high,for example in Trichoderma reesei,Trichoderma Viride,Trichoderma pseudokoningii.There are many reports about bacterial cellulase gene cloning,but it is generally acknowledged that bacterial cellulase activity is relative lower than the activity of fungal cellulases.As the world＇s most widely distributed organism the bacteria possess great exploitation value.This paper describes the current status of the research in the cloning of bacterial cellulase gene and gave a brief summary and analysis.