Abstract: To study the total reflection through effect and filtering properties of 1D photonic crystal, the transition matrix method is adopted to calculate the transmissivity of TE wave and TM wave propagating through 1D photonic crystal with incident angle greater than full reflection angle. Variation of the through effect with the medium optical thickness and cycle number of 1D photonic crystal is obtained. The frequency of total reflection peaks decreases with the increase of the medium optical thickness，and the numbers of total reflection peaks and crystal cycles are equal. The through effect has excellent polarization filtering properties, with which simple-structured and easy-to-control polarization filters can be designed.