To　solve　the　problem　that　the　most　of　the　semantic　Web　service　discovery　algorithms　required　a　domain　ontology　and　had　a　high　complexity,　the　Google　distance　was　used　to　measure　the　semantic　distance　between　input　and　output　parameters　of　Web　services,　and　based　on　Google＇s　massive　vocabulary　and　the　Google　searched　engine　to　calculate　the　semantic　similarity　between　services.　This　algorithm　does　not　require　domain　ontology,　computing　matching　degree　of　Web　services　based　on　the　open　search　engine　of　Google.　It　can　improve　the　computational　efficiency　and　reduce　the　complexity　of　the　algorithm.