The utility model provides a control network state's circuit, including network card chip, logic circuit, monitoring module and indicating module, the network card chip passes through logic circuit and is connected with indicating module to while connection monitoring module. The utility model discloses pass through logic circuit with the yellow monochromatic lamp of network card chip and green monochromatic lamp and merge into a double -colored pilot lamp, therefore save the space of warpout case panel to through the connection or the off -state of the BMC chip control network card line that the chip networks, through the intelligent monitoring function of monitor terminal realization, the control of extensive cluster network has been realized.