Network packet loss ratio detection method

The present invention relates to computer network technology, discloses a network packet loss rate detection method, comprising the steps of: 101, using the packet loss ratio of each probe topology and path detection unicast packet network, and the network according to packet loss rate and path topology modeling; 102, link loss ratio calculated based on the model built; 103, step 102 determines whether all the links in the calculated packet loss rate, and if yes, ending; otherwise, step 104 is performed ; 104, establishing a link in accordance with the packet loss ratio calculated in step 102 the objective function; 105, obtains the packet loss ratio according to the target remaining link function; 106, step 102 and step 105 the calculated link lost The combined packet rate, packet loss ratio give the results of all the links. The present invention is directed to the problem of limited application environment, using unicast probe without internal node help, quickly and accurately detect packet loss rate.