The Single Cell Database (SCDB) is a database of single cells RNA-seq based on multiple characterization of cell types. SCDB collects scRNA-seq datas of single cells projects and facilitates sharing these scientific results and data. Search and visualization tools was developed for exploring these single cell data through cells or genes. Besides, you can perform some analysis base on your own scRNA-seq data using tools in SCDB. scRNA-seq is an powerful method which facilitates to explore the comprehensive transcriptome in a single cell. To provide a useful reference resource for biology science and medicine,we make every effort to make open science and open data interactive, easy, and powerful. We very hope every scientist from all over the world will be a part of this amazing job for science!