help me set pin step moter 6 wire

I have a step motor 6 wire, how to set pin and demo code, help me, please.

What kind of stepper motor is that ? Can you give its model number ?
Do you know what kind of voltage you want to use and how to connect it to the shield ?
Did you read the tutorials for that shield ?

This seems to be like you have: http://www.scienceprog.com/how-to-drive-stepper-motor-with-arduino-motor-shield/
The white and black wires are not used on that page, since the shield has an H-bridge output and is able to apply positive and negative voltage.
Do you have a multimeter ? To confirm that the coil is the same as on that page.