The utility model discloses a monitoring and managing system for electricity energy quality, include: set up in the transformer substation, gather electrical power quality data's power quality monitor device, with power quality monitor device links to each other, the transmission electrical power quality data's communication interface device, with the communication interface device links to each other, and is right electrical power quality data carries out the management device handled, wherein, the management device includes server farm, auxiliary assembly and display device, this monitoring and managing system for electricity energy quality can solve the problem that throughput is not enough of handling pressure among the prior art to multithreading parallel communication pressure, mass data, and through high performance distributing type communication service ware cluster, high performance server, show display device, hardware module such as giga industrial grade ethernet switch can become stably, the daily work platform of efficient electric energy quality.