Abstract: This paper has built the experiment equipment and sensors to investigate the emission synchronization and current oscillograph of three diodes driven by single inductive storage pulse power generator. It shows that the three same parallel diodes driven by single pulse generator begin to emit the electrons at almost the same time and the current oscillographs are almost the same . This result can build the basic possibility of a new high power microwave(HPM) system combined by many HPM oscillators driven by single pulse generator.