Plasma head structure and plasma discharge apparatus with the structure

The invention relates to a plasma head structure and a plasma discharging device with the plasma head structure. The plasma discharging device comprises a power supply with two electrode tips. The plasma head structure consists of an external electrode, an internal electrode and a flow guiding structure, wherein, the external electrode and the internal electrode are respectively connected to the two electrode tips of the power supply. The external electrode comprises a chamber and the internal electrode is arranged in the chamber. The flow guiding structure is arranged in the internal electrode and comprises at least one input end and at least one output end. The input end is a working fluid which can be input while the output end is a chamber communicated with the external electrode. Theflow guiding structure is used for guiding the working fluid to enter the interior of the internal electrode and the working fluid is then output to the chamber of the external electrode. The workingfluid is used for cooling