Variations of polar flux in northern and southern ovals are analyzed in connection with changes of the geliospheric magnetic field near the Earth. The period from 1978 to 2001 is covered. It is shown that polar flux grows not only when magnetic field has B_z < 0 and B_y < 0, but also with increase of interplanetary magnetic field magnitude. We obtained regular asymmetry of precipitation, namely, a flux in the southern hemisphere is less than in the northern hemisphere. Besides, the seasonal variation of auroral precipitation intensity is observed, namely, aurora activity is maximal during equinoxes and minimal during solstices.