Based on the surface plasmon polaritons, a MetalInsulatorMetal (MIM) structure filter which is coupled by a square concave ring resonantor and a waveguide is proposed . The magnetic field distributions, the transmission spectrums and the resonant wavelength distribution curves of the MIM structure are obtained through the numerical simulation software which is based on the finite element method.The results show that its stopband has a minimum transmittance of 0.01 while its passband transmittance can reach up to 0.96 and the top is smooth.When the parameter I or H of the waveguide structure is increased, the corresponding transmission curve has obvious red shift and the transmittance of different stopband modes will also change. In addition, the resonance wavelength shows a linear relationship with the structure parameters. When the structure parameter D is increased, the transmittance of mode 1 increases from 0.63 to 0.80, the mode 1 disappears eventually and the other modes are almost unchanged. the resonance wavelength shows no relationship with D. After optimization of structure parameters, the quality factor of waveguide structure can be improved from 14.82 to 17.07 and the bandwidth of the passband is increased. The MIM structure filters have the advantages of small footprint size, multimodes, narrow stopband, smooth passband, good quality factor and adjustability. Therefore the MIM structure filters may have good applications in Micronano integrated optical devices, especially in wavelenth division multiplexing system.