The 4×4 transfer matrix method is applied to study the transmission and reflection characteristics of one dimensional photonic heterostructures. The key research is the effect of stress-induced anisotropy. The simulation results show that defect-mode in the photonic band gap move distinctly along with the change of photonic crystal′s thickness. A linear relationship is presented with the change of the defect-mode′s move and its thickness. The study further explore the stress-induced anisotropy. With different materials, the defect-mode′s displacement is either strengthened or weakened depending on the stress-induced anisotropy. Considering the higher requirement for the precision of sensors, these features of photonic crystal show potential values in the designation and production of pressure sensors.