Landau,s – Silin Semi Kinetic Equation has been solved by this scientific paper. After taking into consideration the mutual effect between quasi particles in Fermi's Plasma under a magnetic field to get more accurate results related to coming up with some characteristics of this sphere. Like the conductivity and dielectric coefficient due to their necessity in the plasma's characteristic study depending on Landau's parameters and comparing them to the results of other ways for these parameters to be calculated.