The utility model relates to a voltage current measurement return circuit of experimental apparatus is given birth to to stable state hot water, including high voltage power supply and with the field generator that high voltage power supply links to each other, high voltage power supply output parallel resistance divider, resistance voltage divider's the parallelly connected voltmeter in both ends, parallel amplifier between the positive pole of field generator and the ground, series current table on the amplifier. The utility model discloses a voltage measurement circuit can be accurate measuring voltage, through the current measurement return circuit can be accurate measurement clearance electric current, has consequently guaranteed stable state hot water and has given birth to the voltage of experiment and the measurement accuracy requirement of electric current.