Optical cable modem Node device with relay function

The invention provides an optical cable modem Node device with a relay function. The optical cable modem Node device comprises a modem module, a downlink optical receiver, a first combiner, a signal distribution amplification module, a first client port and a second client port. The optical cable modem Node device further comprises an uplink optical receiver and a downlink optical transmitter. When the optical cable modem Node device with the relay function is adopted, the function of the modem in each optical cable modem Node device can be maximized, and accordingly a cable TV network operator can flexibly carry out network design and extension cost in the bandwidth increasing process is greatly reduced.