diff --git a/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/BuildBotCodeException.java b/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/BuildBotCodeException.java
new file mode 100644
index 0000000..5ce7b65
--- /dev/null
+++ b/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/BuildBotCodeException.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2020  LamGC
+ *
+ * ContentGrabbingJi is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ContentGrabbingJi is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.lamgc.cgj.bot.framework.message.exception;
+
+import net.lamgc.cgj.bot.framework.message.BotCode;
+
+/**
+ * 构造 BotCode 异常.
+ * 当出现某些原因导致无法继续构造 BotCode 时可抛出.
+ * 需要说明原因.
+ * @author LamGC
+ * @see BotCode#fromBotCodeString(String)
+ * @see BotCode#toBotCodeString()
+ */
+public class BuildBotCodeException extends Exception {
+
+    public BuildBotCodeException(String message) {
+        super(message);
+    }
+
+    public BuildBotCodeException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public BuildBotCodeException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/InvalidBotCodeException.java b/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/InvalidBotCodeException.java
new file mode 100644
index 0000000..d1a3995
--- /dev/null
+++ b/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/InvalidBotCodeException.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020  LamGC
+ *
+ * ContentGrabbingJi is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ContentGrabbingJi is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.lamgc.cgj.bot.framework.message.exception;
+
+/**
+ * 无效 BotCode 异常.
+ * @author LamGC
+ * @see net.lamgc.cgj.bot.framework.message.BotCode
+ * @see net.lamgc.cgj.bot.framework.message.AbstractBotCode
+ */
+public class InvalidBotCodeException extends Exception {
+
+    public InvalidBotCodeException(String message) {
+        super(message);
+    }
+
+    public InvalidBotCodeException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidBotCodeException(Throwable cause) {
+        super(cause);
+    }
+}
diff --git a/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/UnsupportedBotCodeException.java b/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/UnsupportedBotCodeException.java
new file mode 100644
index 0000000..f2e6131
--- /dev/null
+++ b/ContentGrabbingJi-framework-api/src/main/java/net/lamgc/cgj/bot/framework/message/exception/UnsupportedBotCodeException.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2020  LamGC
+ *
+ * ContentGrabbingJi is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ContentGrabbingJi is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.lamgc.cgj.bot.framework.message.exception;
+
+/**
+ * 不支持的 BotCode 异常.
+ * 当 BotCode 的 FunctionName 不受支持时可抛出.
+ * @author LamGC
+ * @see net.lamgc.cgj.bot.framework.message.BotCode
+ * @see net.lamgc.cgj.bot.framework.message.AbstractBotCode
+ */
+public class UnsupportedBotCodeException extends RuntimeException {
+
+    /**
+     * 构造异常
+     * @param functionName 功能名
+     */
+    public UnsupportedBotCodeException(String functionName) {
+        super(functionName);
+    }
+}