A number of parametric relationships between solar and geophysical parameters has been investigated during the solar cycle 22 to 25. The purposes of this paper is to access how those solar parameters which most directly affect the terrestrial plasma environment vary during a sunspot cycle and to observe the relationship between the magnitude of the sunspot maximum and their influence on the geomagnetic activities. The geomagnetic activity index shows a clear modulation corresponding to the 11- year sunspot cycle. However, the 27day averages of geomagnetic activity do not maximize at the time of sunspot maximum. During solar cycle 22 to 25 both the parameters V and B are correlated with geomagnetic indices Ap and Kp are showing the similar trend of variation during the maximum phase of solar cycle. We used Cosmic ray intensity (CRI) data from three neutron monitor sites in this study: Oulu (0.81 GV), Moscow (2.41 GV), and Beijing (9.56 GV). The results are compared with earlier solar cycles.

Keywords: Sunspot Number, Cosmic Ray Intensity and Geomagnetic Activity.