AIM:To measure and compare the difference of multifocal electroretinogram between normal subjects and patients with myopia.·METHODS:Twenty-two cases(44 eyes) of normal subjects and twenty-four cases (48 eyes) with myopia were tested with VERIS Science 4.2 made by EDI company of America.All trace grouping waveform and six ring average response were determined.We studied the differences of response densities and latencies between normal and myopic groups.·RESULTS:The response densities of all trace grouping waveform and six ring average response in myopia were decreased while the latencies were not changed.·CONCLUSION:The response densities of multifocal electroretinogram in myopic eyes were reduced and resulted predominantly from retinal receptors function loss.