Employing　realizable　k-epsilon　turbulence　model,　emitters　of　three　different　jagged　channels　were　numerical　investigated　by　adopting　porous　medium　model　to　simulate　wall　roughness　elements,　so　as　to　model　geometric　model　of　micro-channel,　which　is　based　on　Fluent.　The　testing　result　of　Micro-PIV　proves　the　reliability　of　the　approach,　which　also　can　be　applied　to　numerical　computations　of　emitters　of　three　different　structure　jags.　According　to　the　numerical　simulation　result,　anti-clogging　and　hydraulic　property　were　analyzed.　In　the　analysis　of　anti-clogging,　it　is　found　that　impurity　sediment　is　seldom　to　happen　because　of　the　high　speed　mainstream,　next　to　which　there　are　recirculation　zones　at　the　swerving　inside　of　all　the　three　channels;　it　is　also　not　liable　to　happen　at　the　cusp　of　the　jags　because　of　the　turbulence;　while　it　only　exits　at　the　jag　cusp　and　the　left　side　of　the　flat-jagged　channel.　By　comparing　the　pressure　drops　and　flow　pattern　index　in　emitters　of　three　different　jagged　channels,　the　hydraulic　property　is　analyzed,　which　proves　the　advantage　of　cusp　jag　emitters　to　control　steady　outflow.