The present invention relates to a system and a method for controlling photovoltaic balancing, the system comprising: photovoltaic modules wherein the photovoltaic modules are connected in series with each other; node balancing control units for blocking and switching the connected photovoltaic modules when measured data fall below current, voltage, and power control data set to control; a gateway unit for storing the measured data; a real-time control module for classifying, comparing, and analyzing the measured data, storing same in a database, and transmitting a control command to the gateway unit; and an integrated information server for monitoring photovoltaic component devices and measured values, analyzing and processing profile information of the component devices, and providing same to the real-time control module.