Insertion type magnetic flow meter is developed on the basis of the pipeline type electromagnetic flow meter.It continues to have the advantages of the pipe flow meter in view of the flow meter in the pipeline installation difficulty cost big and son on the flaw it takes the NIKURADS principle with the electromagnetic method for volume flow rate of the fluid.The insertion type flow meter can be install without stopping the water with the typical opening with pressure and installation with pressure technology. I t also can be install in iron casting pipe and cement pipe.The successfully development of the insertion type electromagnetic flow meter provides a new method for the detection of fluid flow.