A network cabling line-alignment indicator circuit, comprising at least one set of LED indicators, each set of LED indicators comprising an LED lamp, a diode, and a filter capacitor respectively, wherein a positive pole of the LED lamp is connected to a negative pole of the diode, and a negative pole of the LED lamp is connected to a positive pole of the diode, the filter capacitor is connected in parallel to the LED lamp, a capacitance of the filter capacitor is 100 nf-10 μf, and the filter capacitor is configured to filter out intermediate-frequency (IF) line-finding signals, so as to achieve compatibility of line finding and line alignment.