MicroRNAs (miRNAs) are small non-coding regulatory RNAs that regulate gene expression in plants by targeting mRNAs for cleavage or translational repression. Over the past years. miRNAs have been validated to play crucial roles in plant growth and development. Recent researches have witnessed the identification of intersection between miRNAs pathways and phytohormone responses, which improves our understanding of miRNAs and hormone action in developmental control. In this review, we highlight the progress on the current known relationship of miRNAs with phytohormone signaling, and the potential roles of some specific miRNAs in hormone signaling were also discussed. (c) 2009 Elsevier Inc. All rights reserved.