The invention relates to a device for measuring a melt heat historical curve in a pulse current liquid level disturbance solidification fine-grain process and belongs to the technical field of material processing. The device mainly comprises a pulse power supply, a parallel electrode, a heating wire, a lifting rod, a ceramic tube and a plug, wherein the heating wire is connected with a 220 V alternating current through the plug, the parallel electrode is connected with the pulse power supply, and a casting mold contained with a metal block is placed on the lifting rod. Firstly, the heating wire supplies heat to enable the metal block to be molten, then the lifting rod rises to enable the parallel electrode to be inserted into a metal melt and perform pulse current liquid level disturbance treatment on the parallel electrode. Meanwhile, a thermocouple is also inserted into the melt and fixed, and the melt heat historical curve is measured. Compared with a traditional temperature measuring method, the pouring process is omitted, the melt heat historical curve can be stably and accurately measured, and reliable melt heat historical data is provided for the pulse current liquid level disturbance solidification fine-grain process.