A theoretical analysis to study the effects of plasma layer on the field intensity distribution of electromagnetic wave in the focal region of perfect electromagnetic conductor (PEMC) circular reflector under oblique incidence is carried out. The reflection and transmission coefficients at dielectric-plasma and plasma-PEMC boundaries are solved systematically using electromagnetic boundary conditions. Maslov’s method have been used to obtain in focal region of plasma coated PEMC circular reflector. The numerical computations has been applied using MATHEMATICA to solve the analytical integral. The effects of angle of incidence, effective collision frequency, the plasma frequency and the width of plasma coating layer on the fields in image space or focal region have been studied. The obtained computed results are compare with the already published literature under special conditions which confirm the correctness of presented data.