With　the　development　of　wireless　communication　technology　and　sensor　technology,　wireless　sensor　networks　are　widely　used　in　various　fields　such　as　industry,　agriculture,　medical　care,　etc.,　and　have　become　an　important　part　of　building　smart　city　networks.　However,　due　to　the　openness,　distribution,　and　resource　constraints　of　wireless　sensor　networks,　this　network　is　more　likely　to　become　a　target　of　attack.　In　this　paper,　based　on　the　idea　of　trustworthiness　metrics,　we　screen　and　isolate　malicious　nodes　in　the　network　by　measuring　and　determining　the　static,　dynamic,　and　transmission　effectiveness　of　the　nodes.　Experimental　validation　shows　that　this　scheme　can　exclude　malicious　nodes　to　a　certain　extent　to　ensure　the　security　and　trustworthiness　of　other　nodes　in　the　network.　©　2024　SPIE.