In order to obtain the stable PCR combinations for silkies genetic analysis, multiplex PCR was used and its reaction condition was optimized. Five combinations of multiplex PCR with good effects were obtained from eighteen microsatellite markers. Three of them were quadruplex-PCRs, and two were triplex-PCRs. The products of multiplex PCR were further combined into three sets for the electrophoresis on ABI 3100-Avant Genetic Analyzer. The results suggested that the eighteen microsatellite markers could be successfully applied to the silkies genetic analysis.