diff --git a/discovery/discovery.go b/discovery/discovery.go
index 7d44db0..ec28e82 100644
--- a/discovery/discovery.go
+++ b/discovery/discovery.go
@@ -25,15 +25,15 @@ func DiscoverZone(dz *model.DiscoveryZone) {
 }
 
 func DiscoverHost(dh *model.DiscoveryHost) {
-	discoverer.discoverHost(dh)
+	discoverer.discoverHost(dh.Zone, dh)
 }
 
 func DiscoverPort(dp *model.DiscoveryPort) {
-	discoverer.discoverPort(dp)
+	discoverer.discoverPort(dp.Host, dp)
 }
 
 func DiscoverService(ds *model.DiscoveryService) {
-	discoverer.discoverService(ds)
+	discoverer.discoverService(ds.Port, ds)
 }
 
 func Stop() {
@@ -57,9 +57,6 @@ func (d *discovery) start() {
 	d.sendChan = make(chan interface{})
 	d.errChan = make(chan error)
 	logging.Logger().Info(fmt.Sprintf("Discovery: discovery is started"))
-
-	d.stopWg.Add(1)
-	go handle(d)
 }
 
 func (d *discovery) stop() {
@@ -73,47 +70,141 @@ func (d *discovery) stop() {
 	logging.Logger().Info(fmt.Sprintf("Discovery: discovery is stopped"))
 }
 
-func handle(d *discovery) {
-	defer d.stopWg.Done()
+func (d *discovery) discoverZone(dz *model.DiscoveryZone) {
+	logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverZone is start"))
+
+	d.stopWg.Add(1)
+	resultChan := make(chan *model.Zone)
+	errChan := make(chan error)
+	doneChan := make(chan struct{})
+
+	defer func() {
+		close(resultChan)
+		close(errChan)
+		close(doneChan)
+		d.stopWg.Done()
+	}()
+
+	go scanZone(dz, resultChan, errChan, doneChan)
 
 	for {
 		select {
+		case z := <-resultChan:
+			logging.Logger().Info(fmt.Sprintf("zone: %v", z))
+			if nil != dz.DiscoveryHost {
+				d.discoverHost(z, dz.DiscoveryHost)
+			}
+		case err := <-errChan:
+			logging.Logger().Info(fmt.Sprintf("zone err: %v", err))
 		case <-d.stopChan:
 			return
-		case data := <-d.sendChan:
-			logging.Logger().Info(fmt.Sprintf("chan: %v", data))
+		case <-doneChan:
+			logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverZone is complete"))
+			return
 		}
 	}
 }
 
-func (d *discovery) discoverZone(dz *model.DiscoveryZone) {
-	logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverZone is start"))
-
-	doneChan := make(chan struct{})
+func (d *discovery) discoverHost(zone *model.Zone, dh *model.DiscoveryHost) {
+	logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverHost is start"))
 
 	d.stopWg.Add(1)
-	defer d.stopWg.Done()
+	resultChan := make(chan *model.Host)
+	errChan := make(chan error)
+	doneChan := make(chan struct{})
 
-	go scanZone(d, dz, doneChan)
+	defer func() {
+		close(resultChan)
+		close(errChan)
+		close(doneChan)
+		d.stopWg.Done()
+	}()
 
-	select {
-	case <-d.stopChan:
-		<-doneChan
-	case <-doneChan:
-		logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverZone is complete"))
+	go scanHost(zone, dh, resultChan, errChan, doneChan)
+
+	for {
+		select {
+		case h := <-resultChan:
+			logging.Logger().Info(fmt.Sprintf("host: %v", h))
+			if nil != dh.DiscoveryPort {
+				d.discoverPort(h, dh.DiscoveryPort)
+			}
+		case err := <-errChan:
+			logging.Logger().Info(fmt.Sprintf("host err: %v", err))
+		case <-d.stopChan:
+			return
+		case <-doneChan:
+			logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverHost is complete"))
+			return
+		}
 	}
 }
 
-func (d *discovery) discoverHost(dh *model.DiscoveryHost) {
-	logging.Logger().Debug(fmt.Sprintf("DiscoverHost"))
+func (d *discovery) discoverPort(host *model.Host, dp *model.DiscoveryPort) {
+	logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverPort is start"))
+
+	d.stopWg.Add(1)
+	resultChan := make(chan *model.Port)
+	errChan := make(chan error)
+	doneChan := make(chan struct{})
+
+	defer func() {
+		close(resultChan)
+		close(errChan)
+		close(doneChan)
+		d.stopWg.Done()
+	}()
+
+	go scanPort(host, dp, resultChan, errChan, doneChan)
+
+	for {
+		select {
+		case p := <-resultChan:
+			logging.Logger().Info(fmt.Sprintf("port: %v", p))
+			if nil != dp.DiscoveryService {
+				d.discoverService(p, dp.DiscoveryService)
+			}
+		case err := <-errChan:
+			logging.Logger().Info(fmt.Sprintf("port err: %v", err))
+		case <-d.stopChan:
+			return
+		case <-doneChan:
+			logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverPort is complete"))
+			return
+		}
+	}
 }
 
-func (d *discovery) discoverPort(dp *model.DiscoveryPort) {
-	logging.Logger().Debug(fmt.Sprintf("DiscoverPort"))
-}
+func (d *discovery) discoverService(port *model.Port, ds *model.DiscoveryService) {
+	logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverService is start"))
 
-func (d *discovery) discoverService(ds *model.DiscoveryService) {
-	logging.Logger().Debug(fmt.Sprintf("DiscoverService"))
+	d.stopWg.Add(1)
+	resultChan := make(chan *model.Service)
+	errChan := make(chan error)
+	doneChan := make(chan struct{})
+
+	defer func() {
+		close(resultChan)
+		close(errChan)
+		close(doneChan)
+		d.stopWg.Done()
+	}()
+
+	go scanService(port, ds, resultChan, errChan, doneChan)
+
+	for {
+		select {
+		case s := <-resultChan:
+			logging.Logger().Info(fmt.Sprintf("service: %v", s))
+		case err := <-errChan:
+			logging.Logger().Info(fmt.Sprintf("service err: %v", err))
+		case <-d.stopChan:
+			return
+		case <-doneChan:
+			logging.Logger().Debug(fmt.Sprintf("Discovery: DiscoverService is complete"))
+			return
+		}
+	}
 }
 
 func (d *discovery) sendResult() {
diff --git a/discovery/host.go b/discovery/host.go
index e682b76..e17c3a7 100644
--- a/discovery/host.go
+++ b/discovery/host.go
@@ -2,5 +2,7 @@ package discovery
 
 import "git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
 
-func scanHost(d *discovery, dh *model.DiscoveryHost, doneChan chan<- struct{}) {
+func scanHost(zone *model.Zone, dh *model.DiscoveryHost, resultChan chan *model.Host, errChan chan error, doneChan chan<- struct{}) {
+
+	doneChan <- struct{}{}
 }
diff --git a/discovery/port.go b/discovery/port.go
new file mode 100644
index 0000000..c94c900
--- /dev/null
+++ b/discovery/port.go
@@ -0,0 +1,7 @@
+package discovery
+
+import "git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+
+func scanPort(host *model.Host, dp *model.DiscoveryPort, resultChan chan *model.Port, errChan chan error, doneChan chan<- struct{}) {
+	doneChan <- struct{}{}
+}
diff --git a/discovery/service.go b/discovery/service.go
new file mode 100644
index 0000000..11d8b20
--- /dev/null
+++ b/discovery/service.go
@@ -0,0 +1,7 @@
+package discovery
+
+import "git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+
+func scanService(port *model.Port, ds *model.DiscoveryService, resultChan chan *model.Service, errChan chan error, doneChan chan<- struct{}) {
+	doneChan <- struct{}{}
+}
diff --git a/discovery/zone.go b/discovery/zone.go
index a3e52f2..7ea9edb 100644
--- a/discovery/zone.go
+++ b/discovery/zone.go
@@ -8,7 +8,7 @@ import (
 	"git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
 )
 
-func scanZone(d *discovery, dz *model.DiscoveryZone, doneChan chan<- struct{}) {
+func scanZone(dz *model.DiscoveryZone, resultChan chan *model.Zone, errChan chan error, doneChan chan<- struct{}) {
 	var err error
 	var ifaces []net.Interface
 	var addrs []net.Addr
@@ -23,7 +23,7 @@ func scanZone(d *discovery, dz *model.DiscoveryZone, doneChan chan<- struct{}) {
 	// }
 
 	if ifaces, err = net.Interfaces(); nil != err {
-		d.errChan <- err
+		errChan <- err
 		return
 	}
 
@@ -32,14 +32,14 @@ func scanZone(d *discovery, dz *model.DiscoveryZone, doneChan chan<- struct{}) {
 	for _, i := range ifaces {
 
 		if addrs, err = i.Addrs(); nil != err {
-			d.errChan <- err
+			errChan <- err
 			continue
 		}
 
 		for _, addr := range addrs {
 
 			if _, ipnet, err = net.ParseCIDR(addr.String()); nil != err {
-				d.errChan <- err
+				errChan <- err
 				continue
 			}
 			if ipnet.IP.IsLoopback() || checkSameZone(zones, ipnet) || checkExclude(dz.ExcludePatterns, i.Name) {
@@ -55,7 +55,7 @@ func scanZone(d *discovery, dz *model.DiscoveryZone, doneChan chan<- struct{}) {
 				IP:      strings.Split(addr.String(), "/")[0],
 			}
 
-			d.sendChan <- z
+			resultChan <- z
 		}
 	}