A Miniaturized-element Frequency Selective Surface (MEFSS) was fabricated based on the coupling mechanism between an inductive surface( metallic meshes)and a capacitive surface(wire patches). On the basis of the theory of the transmission line, the approximation formulas of the capacitance, the inductance were provided and the structural parameters of MEFSS were analyzed qualitatively. By using the vector modal matching method and the transmission characteristics of MEFSS with different geometry parameters and coupling layer electrical parameters were studied in this paper. Twelve lumped inductors and lumped capacitors were properly fabricated on the two side of a PI film by orthogonal arrangement, and the transmission characteristics of a MEFSS with a size of 240 mm×240 mm was tested by free space method. Results show that when the center frequency is 14.636 GHz, transmittance is -0.382 dB and the half transmittance bandwidth is 2.17 GHz at a TE 0° incidence. When the unit cell size is shorted, the center frequency drifts and the transmittance is decreased. The unit cell size is 0.125λ. When the unit cell size is fixed, the center frequency drifts as the increases of inductive widths,capacitance intervals and patch widths. Moreover,if the thickness of the coupling layer is increased by 0.4 mm, the center frequency lowly drifts by 1.4 GHz and transmittance is decreased by 2.6 dB. If the coupling layer relative permittivity is changed from 3.5 to 2,the center frequency highly drifts 2.8 GHz. It concludes that the FSS only with a size of 0.125 λ fabricated by coupling mechanism between inductive and capacitive surfaces is charaterized by miniaturization, wide pass-band and lower sensitive to the incident angle unit .