Abstract: the salient pole stepper motor is refers to the form of the rotor is salient pole, also is a kind of motor is more widely used, although the air gap is not very uniform, but does not affect the normal use, and application advantages are more obvious in hydro-generator. In this paper, from the following several aspects to meet salient pole stepper motor. Construction, salient pole a stepper motor is salient pole rotor, the rotor is composed of main pole, exciting winding, yoke, shaft, slip ring and other components. Rotor pole shoe usually groove clamp put damping windings, its main role will be start winding and prevent shock role in running, this kind of damper winding industry for making short-circuit copper ring and groove end of copper welding is made. Second, the application scope of salient stepper motor with its application advantages with the application scope of guangdong development bank, especially used in hydro-generator is more, in hydro-generator, its short axis, slow speed, large motor diameter, polar logarithmic. In the continuous application of people is a great improvement and promotion. The above content is the information about the salient pole stepper motor, is a kind of a motor application advantages better, service life is longer, people can rest assured the choose and buy and use, at the time of use to avoid excessive current and voltage is too high and motor fever phenomenon. With the effect. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: