To build the prospect of Chinese IP-level topology

the traditional destination sampling method was evaluated;three new improved techniques were developed;and Chinese network was measured.With the methodology of complex network

the topology characteristics were extracted and compared.The sizes of autonomous systems（AS） were investi-gated with the IP2AS technique.The results showe that lots of information is missed by the traditional method;the load is reduced to about a half by the new techniques while the completeness is retained;and the size of new discovered Chinese topology is 5 times as many as that discovered by CAIDA’s skitter.Compared to skitter’s topology

the more complete topology showe more observable dissortativity

weaker clustering

shorter distance and more disequilibrium of node traf-fic distribution.The heavy-tailed distribution of AS sizes is discovered.