In this paper,the stratiform structure is formed from combusting gas flows of the premixed air-acetylene on burner,its interface is thought as axisymmetric spun conicoid,according to the best fitting spherical cap based on reasonable approximation,its equation of simulation curved surface is derived;the transmissivity of light and sensitivity factor with thickness on combusting flows are measured,the film thickness with different layer is revised based on measured result;while parallel input light pass through flame,the optical path difference is calculated during light propagation between the image plane and front-plane of film layer of flame,the phase change effects on phase hologram of laser is taken into consideration,the relevant parameter of phase hologram of laser is calculated;the relevant distance can be flexibly adjusted in experiments;the high quality kinoforms can be obtained.