IntRNA is constructed to enable the online services of (1) providing RNA encoding features (D-features and G-features) which are applied to generate the encoding strategy of intRNA and (2) realizing the most comprehensive multi-hierarchical RNA classification (RNA coding potential mining, systematic annotation of sncRNAs, and differentiation of linear and circular lncRNAs) based on deep learning. Therefore, users can get the encoding results, RNA encoding maps and RNA classification results from our server, which can be directly used for research of artificial intelligence.