Abstract: In fracturing operation the fracturing fluid plays an important actor to increase fractures and carry the proppant into the fractures.According to domestic actual conditions,the compound mechanics of gelatinous fracture fluid is studied.Through labor comparative measurements the most important odorants are selected including gellant,colloid agent,corrosion inhibitor,gel breaker and surface active agent.Meanwhile the tests for their variation trends with time and temperature are conducted,result in reliable concentration.The theoretical foundation is provided for actual fluid compound and operation in situ.The studied fracturing fluid achieved fine results for its application in situ,the sand-carring capacity,the flowing back and diversion capacity after fracturing.It would be a new technical support for future coalbed methane development.