The present invention relates to a multistage inductor combination type power source EMI wave filter which is used on a high-frequency electronic transducer of large power electrodeless fluorescent lamp. The invention is characterized by comprising a first filtering coil segment, a second filtering coil segment, a third filtering coil segment and a fourth filtering coil segment. The first filtering coil segment is provided with a first filtering coil output interface and a first filtering coil segment output interface. The second filtering coil segment is provided with a second filtering coil output interface and a second filtering coil segment output interface. The third filtering coil segment is provided with a third filtering coil input interface and a third filtering coil segment output interface. The fourth filtering coil segment is provided with a fourth filtering coil input interface and a fourth filtering coil segment output interface. The second filtering coil segment is composed through serial-connecting at least two filtering coil segment units. The fourth filtering coil segment is composed of at least two fourth filtering coil segment units. Furthermore the second filtering coil segment units and the fourth filtering coil segment units have one-to-one correspondence. The product of the invention can effectively reduce the electromagnetic interference.