An embodiment of the invention discloses decentralized distributed-type nodes and a distributed-type system in a crawler cluster, wherein the decentralized distributed-type nodes and the distributed-type system in the crawler cluster are based on structuralized peer-to-peer (p2p). The distributed-type nodes in the crawler cluster based on the structuralized p2p comprise a bottom covering net, a crawl module and a control center, wherein the bottom covering net is based on a p2p organization mode to execute a protocol of disseminating and receiving url between the nodes, the crawl module is based on the disseminated url to be in charge of grabbing corresponding resources from the internet, and the control center executes the function of disseminating and receiving the url. By using the features of kademlia of the structuralized p2p algorithm, the distributed-type nodes and the distributed-type system in the crawler cluster skillfully solve de-weight and load balancing problems in the distributed-type crawler system, achieve good expansibility and fault tolerance of the system, and are capable of providing a universal design method for a large-scale distributed-type crawler system.