The utility model provides a dynamic electric simulation device used for depletion-drive development. The device comprises an oil/gas reservoir simulation system, a low-voltage circuit system and a measurement system, wherein the oil/gas reservoir simulation system comprises an oil/gas layer, a well and a boundary; the low-voltage circuit system applies voltage between the boundary and the well so that energy difference between a storage layer and a production well can be simulated, and current passing the oil/gas layer is used for simulating the oil/gas yield; the measurement system is used for obtaining voltage data between the boundary and the well and current data passing the oil/gas layer; the low-voltage system provides voltage which is continuously reduced between the boundary and the well so that the non-stable seepage process of oil/gas reservoir depletion-drive development can be simulated. The low-voltage system can also provide constant voltage between the boundary and the well. The dynamic electric simulation device not only can be used for simulating the non-stable seepage process in depletion-drive development but also can be used for simulating the continuous overall process of stable seepage and non-stable seepage.