The initial deep learning is a learning process that uses deep neural network to solve feature expression. Deep neural network itself is not a brand-new concept, which can be roughly considered as a neural network structure with multiple hidden layers. In order to improve the training effect of deep neural network, people have adjusted the connection mode and activation function of neurons accordingly. At present, we have joined hands with experts from the Chinese Academy of Sciences to launch a deep learning course, which is closely related to market demand. Those who are interested in learning can learn about it.