The 4×4 transfer matrix method was used to investigate the optical isolation property of two different one-dimensional magneto-photonic crystal structures. For the first structure, when the angle between applied magnetic field and optical axis was set as 52.0°, it could realize the optical isolation around 0.95 nm with total thickness of 7.96 μm, possesses Faraday rotation angle and transmittance wave were at 45°~50.65° and 97.01%~99.96%. This structure with 43 layers is applicable in the practical application and fabrication. Regarding the other structure, when the angle between applied magnetic field and optical axis was set as 32.7°, optical isolation reached 0.85 nm broad with total thickness of 11.54 μm, the Faraday rotation angle fluctuated from 45.0°~48.55° and the transmittance ranged from 98.85%~100%. Integrable optical isolators can be accessed by using the two proposed one-dimensional magneto-photonic crystal structures instead of the bulk type magneto-optical materials in bulk type optical isolator in commerce.