Transmission　coefficient　of　the　one-dimensional　photonic　crystal　with　various　dielectric　materials　is　simulated　by　using　precise　integration,　and　simulation　results　are　analyzed.　Photonic　crystal　is　divided　into　different　sections.　Potential　energy　of　the　section　and　mixed　energy　of　the　section　are　introduced.　The　export　stiffness　matrix　of　each　section　can　be　obtained　by　using　precise　integration,　and　then　each　stiffness　matrix　is　combined.　The　problem　can　be　solved　by　imposing　boundary　conditions　on　the　stiffness　matrix.　The　curves　of　lose　rate　D　are　drawn　to　check　the　validity　and　accuracy　of　the　numerical　solution.　The　simulation　results　show　that　this　method　is　accurate,　efficient　and　applicable　for　the　simulation　of　one-dimensional　photonic　crystal.