diff --git a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ApplicationExceptionHandler.java b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ApplicationExceptionHandler.java
index 60e361129..209422554 100644
--- a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ApplicationExceptionHandler.java
+++ b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ApplicationExceptionHandler.java
@@ -5,31 +5,42 @@ import static com.ai.cloud.skywalking.conf.Config.BuriedPoint.EXCLUSIVE_EXCEPTIO
 import java.util.HashSet;
 import java.util.Set;
 
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
 import com.ai.cloud.skywalking.api.IExceptionHandler;
 import com.ai.cloud.skywalking.conf.Config;
 import com.ai.cloud.skywalking.context.Context;
 import com.ai.cloud.skywalking.protocol.Span;
 
 public class ApplicationExceptionHandler implements IExceptionHandler {
+	private static Logger logger = LogManager
+			.getLogger(ApplicationExceptionHandler.class);
+
 	private static String EXCEPTION_SPLIT = ",";
-	
+
 	private static Set<String> exclusiveExceptionSet = null;
 
 	@Override
 	public void handleException(Throwable th) {
-		if (exclusiveExceptionSet == null) {
-			Set<String> exclusiveExceptions = new HashSet<String>();
-			
-			String[] exceptions = EXCLUSIVE_EXCEPTIONS.split(EXCEPTION_SPLIT);
-			for(String exception : exceptions){
-				exclusiveExceptions.add(exception);
-			}
-			exclusiveExceptionSet = exclusiveExceptions;
-		}
+		try {
+			if (exclusiveExceptionSet == null) {
+				Set<String> exclusiveExceptions = new HashSet<String>();
 
-		Span span = Context.getLastSpan();
-		span.handleException(th, exclusiveExceptionSet,
-				Config.BuriedPoint.MAX_EXCEPTION_STACK_LENGTH);
+				String[] exceptions = EXCLUSIVE_EXCEPTIONS
+						.split(EXCEPTION_SPLIT);
+				for (String exception : exceptions) {
+					exclusiveExceptions.add(exception);
+				}
+				exclusiveExceptionSet = exclusiveExceptions;
+			}
+
+			Span span = Context.getLastSpan();
+			span.handleException(th, exclusiveExceptionSet,
+					Config.BuriedPoint.MAX_EXCEPTION_STACK_LENGTH);
+		} catch (Throwable t) {
+			logger.error(t.getMessage(), t);
+		}
 	}
 
 }
diff --git a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/LocalBuriedPointSender.java b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/LocalBuriedPointSender.java
index bdcd5b7f4..fcfbb0620 100644
--- a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/LocalBuriedPointSender.java
+++ b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/LocalBuriedPointSender.java
@@ -14,42 +14,57 @@ import com.ai.cloud.skywalking.model.Identification;
 import com.ai.cloud.skywalking.protocol.Span;
 import com.ai.cloud.skywalking.util.ContextGenerator;
 
-public class LocalBuriedPointSender extends ApplicationExceptionHandler implements IBuriedPointSender {
+public class LocalBuriedPointSender extends ApplicationExceptionHandler
+		implements IBuriedPointSender {
 
-	private static Logger logger = LogManager.getLogger(LocalBuriedPointSender.class);
+	private static Logger logger = LogManager
+			.getLogger(LocalBuriedPointSender.class);
 
-    public ContextData beforeSend(Identification id) {
-        if (!AuthDesc.isAuth())
-            return new EmptyContextData();
+	public ContextData beforeSend(Identification id) {
+		try {
+			if (!AuthDesc.isAuth())
+				return new EmptyContextData();
 
-        Span spanData = ContextGenerator.generateSpanFromThreadLocal(id);
-        // 将新创建的Context存放到ThreadLocal栈中。
-        Context.append(spanData);
-        // 并将当前的Context返回回去
-        return new ContextData(spanData);
-    }
+			Span spanData = ContextGenerator.generateSpanFromThreadLocal(id);
+			// 将新创建的Context存放到ThreadLocal栈中。
+			Context.append(spanData);
+			// 并将当前的Context返回回去
+			return new ContextData(spanData);
+		} catch (Throwable t) {
+			logger.error(t.getMessage(), t);
+			return new EmptyContextData();
+		}
+	}
 
-    public void afterSend() {
-        if (!AuthDesc.isAuth())
-            return;
+	public void afterSend() {
+		try {
+			if (!AuthDesc.isAuth())
+				return;
 
-        // 弹出上下文的栈顶中的元素
-        Span spanData = Context.removeLastSpan();
-        if (spanData == null) {
-            return;
-        }
+			// 弹出上下文的栈顶中的元素
+			Span spanData = Context.removeLastSpan();
+			if (spanData == null) {
+				return;
+			}
 
-        // 加上花费时间
-        spanData.setCost(System.currentTimeMillis() - spanData.getStartDate());
+			// 加上花费时间
+			spanData.setCost(System.currentTimeMillis()
+					- spanData.getStartDate());
 
-        if (Config.BuriedPoint.PRINTF) {
-            logger.debug("TraceId:" + spanData.getTraceId() + "\tviewpointId:" + spanData.getViewPointId() + "\tParentLevelId:" + spanData.
-                    getParentLevel() + "\tLevelId:" + spanData.getLevelId() + "\tbusinessKey:" + spanData.getBusinessKey());
-        }
+			if (Config.BuriedPoint.PRINTF) {
+				logger.debug("TraceId:" + spanData.getTraceId()
+						+ "\tviewpointId:" + spanData.getViewPointId()
+						+ "\tParentLevelId:" + spanData.getParentLevel()
+						+ "\tLevelId:" + spanData.getLevelId()
+						+ "\tbusinessKey:" + spanData.getBusinessKey());
+			}
 
-        // 存放到本地发送进程中
-        if (!Config.Sender.IS_OFF) {
-            ContextBuffer.save(spanData);
-        }
-    }
+			// 存放到本地发送进程中
+			if (!Config.Sender.IS_OFF) {
+				ContextBuffer.save(spanData);
+			}
+		} catch (Throwable t) {
+			logger.error(t.getMessage(), t);
+		}
+	}
 }
diff --git a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/RPCBuriedPointReceiver.java b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/RPCBuriedPointReceiver.java
index 0358b1202..50ac1b3e5 100644
--- a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/RPCBuriedPointReceiver.java
+++ b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/RPCBuriedPointReceiver.java
@@ -13,35 +13,49 @@ import com.ai.cloud.skywalking.model.Identification;
 import com.ai.cloud.skywalking.protocol.Span;
 import com.ai.cloud.skywalking.util.ContextGenerator;
 
-public class RPCBuriedPointReceiver extends ApplicationExceptionHandler implements IBuriedPointReceiver {
+public class RPCBuriedPointReceiver extends ApplicationExceptionHandler
+		implements IBuriedPointReceiver {
 
-	private static Logger logger = LogManager.getLogger(RPCBuriedPointReceiver.class);
+	private static Logger logger = LogManager
+			.getLogger(RPCBuriedPointReceiver.class);
 
-    public void afterReceived() {
-        if (!AuthDesc.isAuth())
-            return;
+	public void afterReceived() {
+		try {
+			if (!AuthDesc.isAuth())
+				return;
 
-        // 获取上下文的栈顶中的元素
-        Span spanData = Context.removeLastSpan();
-        // 填上必要信息
-        spanData.setCost(System.currentTimeMillis() - spanData.getStartDate());
-        // 存放到本地发送进程中
-        ContextBuffer.save(spanData);
-    }
+			// 获取上下文的栈顶中的元素
+			Span spanData = Context.removeLastSpan();
+			// 填上必要信息
+			spanData.setCost(System.currentTimeMillis()
+					- spanData.getStartDate());
+			// 存放到本地发送进程中
+			ContextBuffer.save(spanData);
+		} catch (Throwable t) {
+			logger.error(t.getMessage(), t);
+		}
+	}
 
-    public void beforeReceived(ContextData context, Identification id) {
-        if (!AuthDesc.isAuth())
-            return;
+	public void beforeReceived(ContextData context, Identification id) {
+		try {
+			if (!AuthDesc.isAuth())
+				return;
 
-        Span spanData = ContextGenerator.generateSpanFromContextData(context, id);
-        //设置是否为接收端
-        spanData.setReceiver(true);
+			Span spanData = ContextGenerator.generateSpanFromContextData(
+					context, id);
+			// 设置是否为接收端
+			spanData.setReceiver(true);
 
-        if (Config.BuriedPoint.PRINTF) {
-            logger.debug("TraceId:" + spanData.getTraceId() + "\tviewpointId:" + spanData.getViewPointId() + "\tParentLevelId:" + spanData.
-                    getParentLevel() + "\tLevelId:" + spanData.getLevelId());
-        }
+			if (Config.BuriedPoint.PRINTF) {
+				logger.debug("TraceId:" + spanData.getTraceId()
+						+ "\tviewpointId:" + spanData.getViewPointId()
+						+ "\tParentLevelId:" + spanData.getParentLevel()
+						+ "\tLevelId:" + spanData.getLevelId());
+			}
 
-        Context.append(spanData);
-    }
+			Context.append(spanData);
+		} catch (Throwable t) {
+			logger.error(t.getMessage(), t);
+		}
+	}
 }
diff --git a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ThreadBuriedPointSender.java b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ThreadBuriedPointSender.java
index 2c8195d65..79b6be4c5 100644
--- a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ThreadBuriedPointSender.java
+++ b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ThreadBuriedPointSender.java
@@ -15,7 +15,13 @@ import com.ai.cloud.skywalking.protocol.Span;
 import com.ai.cloud.skywalking.util.BuriedPointMachineUtil;
 import com.ai.cloud.skywalking.util.TraceIdGenerator;
 
-
+/**
+ * 暂不确定多线程的实现方式
+ * 
+ * @author wusheng
+ *
+ */
+@Deprecated
 public class ThreadBuriedPointSender extends ApplicationExceptionHandler implements IBuriedPointSender {
 	private static Logger logger = LogManager.getLogger(ThreadBuriedPointSender.class);
 
diff --git a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ThreadFactoryBuriedPointSender.java b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ThreadFactoryBuriedPointSender.java
index d1097a8e9..ff09f42bd 100644
--- a/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ThreadFactoryBuriedPointSender.java
+++ b/skywalking-api/src/main/java/com/ai/cloud/skywalking/buriedpoint/ThreadFactoryBuriedPointSender.java
@@ -14,6 +14,13 @@ import com.ai.cloud.skywalking.model.Identification;
 import com.ai.cloud.skywalking.protocol.Span;
 import com.ai.cloud.skywalking.util.ContextGenerator;
 
+/**
+ * 暂不确定多线程的实现方式
+ * 
+ * @author wusheng
+ *
+ */
+@Deprecated
 public class ThreadFactoryBuriedPointSender extends ApplicationExceptionHandler implements IBuriedPointSender {
 	private static Logger logger = LogManager.getLogger(ThreadBuriedPointSender.class);