The invention discloses an energy-saving optimization scheduling system for a power grid, and the system comprises a hardware system and a software system. The hardware system comprises a main server, a WEB server, a switcher, and all branch work stations. The software system is a scheduling automation system, and the scheduling automation system is installed in the main server. The main server achieves the scheduling management of a power distribution network through the scheduling automation system. The scheduling automation system comprises a scheduling setting unit which is used for determining the electric energy supply capability of a power supply station. A centralized scheduling unit is used for obtaining electric energy resources from the power supply station, and distributing the electric energy resources to users. The main server achieves the transmission connection with each branch work station through the WEB server and the switcher, and each work station transmits the scheduling information to the main server through a network. The main server carries out the effective management through the scheduling automation system. According to the invention, the system can effectively improve the safety level of distribution network management, and achieves the standard management.