The invention relates to a multi-channel looped network node device with multi-point collaboration detection and a detection method. In nodes, at least one node is an assistant node which has a function of starting a message. A master node and the assistant mode detect a link status in a collaboration mode. The master node and the assistant node sequentially or simultaneously start detection messages of a looped network at certain time intervals. The messages started by all the nodes are sequentially forwarded in the loop until the messages return to the nodes starting the messages. A CPU and an ASIC chip of the node device form a plurality of channels according to types of the transmitted messages, and the corresponding special transmission channel is used for each message type. The multi-channel looped network node device with the multi-point collaboration detection has the advantages that the recovery rate of the looped network and reliability of the looped network are obviously improved, operation resources of the CPU of the loop nodes are greatly saved, the phenomenon of packet loss is avoided, and under the condition that operation loads of the looped network nodes are not increased, larger is the size of the looped network, shorter is recovery time of communication when failure happens on the looped network.