The invention relates to a device for improving the rising characteristic of the current in the starting process of a stepping motor. The device comprises a pulse and high level triggering device, a switch unit, a trigger pulse stabilizing device, a short time pulse providing device, the stepping motor, a lower voltage source, a high voltage source, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a variable resistor, a capacitor and a 5V voltage source. The voltage switching method is adopted for the device to drive the stepping motor, the stepping motor can be started fast, the response characteristic curve of the stepping motor and the rising characteristic of the current in the starting process of the stepping motor can be improved, and thus the current is closer to a rectangle.