A micro-grid reactive compensation cabinet provided by the invention comprises a master controller, an Ethernet communication bus, a power bus, a master controller and a plurality of capacitance compensation branches. The master controller includes a central processing unit, a display, a communication interface and a communication transition interface, and the display, the communication interface and the communication transition interface are connected with the central processing unit; the Ethernet communication bus is connected with the communication interface; a plurality of capacitance compensation branches are connected in parallel with the power bus, each capacitance compensation branch includes a smart switch, a bidirectional thyristor, an inductor and a capacitor, and the smart switch connected in parallel with and the bidirectional thyristor and then is connected in series with the inductor and the capacitors; and the smart switch is connected with the power bus and the Ethernet communication bus. The micro-grid reactive compensation cabinet can realize the uniform real-time scheduling of each capacitance compensation branch by the master controller through the connection between the master controller and the capacitance compensation branch and realize the dynamic switching of each capacitance compensation branch so as to effectively compensate the reactive power of each node in the microgrid.