Abstract: In order to study the enhanced optical transmission characteristics of subwavelength compact metal column arrays film on the glass substrates, 3-D finite difference time domain method was adopted to simulate. The enhanced optical transmission spectrum of the film presented a single main peak structure. The peak position and bandwidth of transmission spectrum were different due to the difference of the metal column array period and metal column height. Au and Ag metal model were calculated and analyzed for optimization. The results show that the peak value of the normalized transmittance of Ag column arrays can reach 4.55. By altering array period, the peak wavelength changes between 800nm to 1600nm. The full width at half maximum of transmission band will increase from 220nm to 380nm. The study provides a new solution for the design of micro device about optical band-pass filter.