In electronic storage ring

the bending magnet field error

rotational error andthe quadrupole displacement error produce dipole field

which will induce the closed orbit distortion (COD) of cycle electrons. Different corrector and BPM placementschemes were compased and studied

it is found that the scheme with 10 BPM (BPMclose to the sextupole ) and 4 horizontal and 4 vertical correctors in each cell isacceptable

and the COD Rms. could be suppressed to be under 0.1mm. The effect ofthe bending magnet field error

rotational error and the quadrupole displacementerror to the COD and how the BPM reading error and correctors error influenced thecorrection result were studied. Through COD correction the dynamic aperture couldbe resumed to be above 75% of the ideal dynamic aperture.