Chaotic photonic reservoir computing is a new information processing technique, which employs chaotic laser as the reservoir. The advantages of the new technique are of high processing speed, big computing capacity and simple physical implementation. This new kind of computing can be applied in the future photonic computer, intelligent information processing and other fields. This paper introduces the concept, principles, processes and implementation of chaotic photonic reservoir computing in detail. The advantages and disadvantages of different implementation schemes are compared. Some issues to be resolved for the chaotic photonic reservoir computing are listed. The trends of chaotic photonic reservoir computing are also demonstrated.