Abstract: Taking five-spot injection production pattern as an example,this paper makes a study of variable law of injection rate,production rate and areal sweep efficiency with fracture orientation,fracturing well distinction,fracture penetration ratio and dimensionless fracture conductivity with the help of black oil model.Some regular knowledges are obtained in research,which can be used to injection-production pattern configuration in a new oilfield developed by fracturing and overall optimum design of fracturing for a given injection-production pattern.