Noncoding RNA,including miRNA,siRNA and piRNA as the representative of the short RNA and long chain non coding RNA.long non-coding RNAs(lncRNAs) are hot spots which are different from other smaller non-coding RNAs.lncRNAs have been found to affect species evolution,embryonic development,metabolism and tumorigenesis.MicroRNAs(miRNAs) is a class of small noncoding RNAs that control gene expression by targeting mRNAs and triggering either translation repression or RNA degradation.