It is easy to do any job by human beings such as object recognition and casualty reasoning. However, it is hard to do the same job on the computer. In the past decade, there are many machine learning approach is used to solve such tasks. Nevertheless, we don\'t have real AI so far. Recently, deep learning is widely used for different tasks and has been proved the excellent performance. In this class, we will introduce the basic concepts of AI and show some toolbox of deep learning on various applications.