The diversification of the power business and the increase in power customers have led to an increase in labor costs and pressures of customer service in the power company as the service quality requirements continue to increase. In order to reduce labor pressure and improve service quality, this paper designs an online power smart customer service system based on Artificial Intelligence (AI). Firstly, it introduces the principle of the smart customer service system, then analyzes the functions of each part in detail, and an automatic questionandanswer system based on natural language processing technology and deep learning of AI is designed. The work of this paper would have certain reference value for the system design and implementation of online power smart customer service.