Microtia is a complicated congenital anomaly with a genetic and environmental predisposition, and the molecular events underlying this disease are not fully understood. MicroRNAs (miRNAs) are a class of 20-22 nucleotide non-coding RNAs that function to control post-transcriptional gene expression. We want to find the miRNA expression profiling of microtia by using Affymetrix GeneChip(®) miRNA 2.0 Arrays.