Abstract: Here I analyze the structural and sedimentary environment of Shang dian oil field, compare the macro features with micro features of different reservoirs, including their components, texture, structure, four properties, different reflections on seismic section, and genesis of different reservoirs, and point out the effect of petrofabric on oil and gas exploit ation. Difference in genesis between reservoir smay make difference in fabric and micro features of rocks. So much attention should be paid to those oil fields with a low output at present. The study can provide a scientific basis for making exploitation plan and for taking development measures in a certain oil field in future.