In power system Distribution Network is of the main part. Distribution network is directly connected to the load center. Nowadays, the concept of integrating renewable and distributed energy sources in the distribution level, has become a great concern to the power engineers. To improve power quality and stability of power system in the distribution network, further researches are going on by the power companies and the power engineers. A review of the Electrical Power Distribution System along with its architecture (i.e. Radial Network Architecture, Ring/ Loop Network Architecture and Mesh Micro-grid Architecture), principle of operation, control system, future growth, and also its advantages and disadvantages are presented in this paper.