Since the first soft-X-ray was achieved, to realize the low excited threshold and table-top soft-X-ray laser is a significant research. Capillary discharge soft-X-ray laser is one of the crucial quomodo to realize table-top soft-X-ray laser. The capillary discharge 46.9nm soft-X-ray laser has been detected by X-ray diffraction diode(XRD). The experimental results indicate that the influence of the material of the electrode on capillary discharge soft-X-ray laser is not the critical factor. Considering the sputtering of the element, choosing the electrode made of molybdenum is advantageous. The shape of the electrode mainly influences on the conduction of the pre-current pulse but not on laser, and it is easier for the pre-current pulse to conduct in longer capillary by choosing the pyramidal electrode.