The present paper was focused on the variation of Solar wind dynamic pressure, magnetic pressure and thermal pressure during the year 2009-2019 of the solar cycle 24. The daily averaged data taken from STEREO A spacecraft are used to determine the phases of solar wind plasma parameters. This paper analyzes the parameters of solar wind compared ascending, maximum and declining phases of the solar cycle 24. The solar wind data compared ascending and declining phases decreases in the solar wind dynamic and thermal pressure, observed for the ascending phase relative to that for the declining phase. The coronal holes increase an ascending phase of the solar cycle. The magnetic pressure depends on the number of sunspots i.e. maximum for the maximum phase. Thermal, magnetic and dynamic pressure variations are larger in solar maximum than in solar minimum, as expected because the majority of parameters have a stronger variation in solar maximum.