diff --git a/CHANGELOG-2.0.md b/CHANGELOG-2.0.md
index c39dee5ab5..9dc9793bba 100644
--- a/CHANGELOG-2.0.md
+++ b/CHANGELOG-2.0.md
@@ -5,6 +5,10 @@
 - [#2411](https://github.com/hyperf/hyperf/pull/2411) Added method `Hyperf\Database\Query\Builder::forPageBeforeId` for database.
 - [#2420](https://github.com/hyperf/hyperf/pull/2420) [#2426](https://github.com/hyperf/hyperf/pull/2426) Added option `enable-event-dispatcher` to initialize EventDispatcher for command.
 
+## Optimized
+
+- [#2429](https://github.com/hyperf/hyperf/pull/2429) Optimized error message when does not set the value of `@var` for `@Inject`.
+
 # v2.0.9 - 2020-08-31
 
 ## Added
diff --git a/docs/zh-cn/db/gen.md b/docs/zh-cn/db/gen.md
index 913b534887..132c2a4aa3 100644
--- a/docs/zh-cn/db/gen.md
+++ b/docs/zh-cn/db/gen.md
@@ -244,7 +244,7 @@ class ModelUpdateVisitor extends Visitor
         }
 
         if (Str::startsWith($cast, 'decimal')) {
-            // 如果 cast 为 decimal，则这是 @property 为 string
+            // 如果 cast 为 decimal，则 @property 改为 string
             return 'string';
         }
 
diff --git a/docs/zh-cn/db/quick-start.md b/docs/zh-cn/db/quick-start.md
index b141ce2234..dc3b994e89 100644
--- a/docs/zh-cn/db/quick-start.md
+++ b/docs/zh-cn/db/quick-start.md
@@ -25,15 +25,16 @@ composer require hyperf/database
 默认配置如下，数据库支持多库配置，默认为 `default`。
 
 |        配置项        |  类型  |     默认值      |        备注        |
-|:--------------------:|:------:|:---------------:|:------------------:|
+| :------------------: | :----: | :-------------: | :----------------: |
 |        driver        | string |       无        |     数据库引擎     |
 |         host         | string |       无        |     数据库地址     |
-|       database       | string |       无        |    数据库默认 DB    |
+|       database       | string |       无        |   数据库默认 DB    |
 |       username       | string |       无        |    数据库用户名    |
 |       password       | string |      null       |     数据库密码     |
 |       charset        | string |      utf8       |     数据库编码     |
 |      collation       | string | utf8_unicode_ci |     数据库编码     |
 |        prefix        | string |       ''        |   数据库模型前缀   |
+|       timezone       | string |      null       |     数据库时区     |
 | pool.min_connections |  int   |        1        | 连接池内最少连接数 |
 | pool.max_connections |  int   |       10        | 连接池内最大连接数 |
 | pool.connect_timeout | float  |      10.0       |  连接等待超时时间  |
diff --git a/src/di/src/Annotation/Inject.php b/src/di/src/Annotation/Inject.php
index 2b09cf3284..c1ba2d49bc 100644
--- a/src/di/src/Annotation/Inject.php
+++ b/src/di/src/Annotation/Inject.php
@@ -74,6 +74,8 @@ public function collectProperty(string $className, ?string $target): void
                 throw $exception;
             }
             $this->value = '';
+        } catch (\Throwable $exception) {
+            throw new AnnotationException("The @Inject value is invalid for {$className}->{$target}. Because {$exception->getMessage()}");
         }
     }
 }
diff --git a/src/di/tests/InjectTest.php b/src/di/tests/InjectTest.php
index a91865bc97..227aa1365e 100644
--- a/src/di/tests/InjectTest.php
+++ b/src/di/tests/InjectTest.php
@@ -13,11 +13,13 @@
 
 use Hyperf\Contract\ContainerInterface;
 use Hyperf\Di\Annotation\AnnotationReader;
+use Hyperf\Di\Annotation\Inject;
 use Hyperf\Di\Annotation\ScanConfig;
 use Hyperf\Di\Annotation\Scanner;
 use Hyperf\Di\Aop\Ast;
 use Hyperf\Di\BetterReflectionManager;
 use Hyperf\Di\ClassLoader;
+use Hyperf\Di\Exception\AnnotationException;
 use Hyperf\Di\Exception\NotFoundException;
 use Hyperf\Utils\ApplicationContext;
 use HyperfTest\Di\ExceptionStub\DemoInjectException;
@@ -25,6 +27,7 @@
 use HyperfTest\Di\Stub\AspectCollector;
 use HyperfTest\Di\Stub\Demo;
 use HyperfTest\Di\Stub\DemoInject;
+use HyperfTest\Di\Stub\EmptyVarValue;
 use Mockery;
 use PHPUnit\Framework\TestCase;
 
@@ -76,6 +79,26 @@ public function testInjectException()
         }
     }
 
+    public function testInjectNotInitReflector()
+    {
+        $this->expectException(AnnotationException::class);
+        $this->expectExceptionMessage('The @Inject value is invalid for HyperfTest\Di\Stub\EmptyVarValue->demo. Because The class reflector object does not init yet');
+
+        $inject = new Inject();
+        $inject->collectProperty(EmptyVarValue::class, 'demo');
+    }
+
+    public function testInjectEmptyVar()
+    {
+        $this->expectException(AnnotationException::class);
+        $this->expectExceptionMessage('The @Inject value is invalid for HyperfTest\Di\Stub\EmptyVarValue->demo. Because Argument 1 passed to Roave\BetterReflection\TypesFinder\FindPropertyType::Roave\BetterReflection\TypesFinder\{closure}() must be an instance of phpDocumentor\Reflection\DocBlock\Tags\Var_, instance of phpDocumentor\Reflection\DocBlock\Tags\InvalidTag given');
+
+        BetterReflectionManager::initClassReflector([__DIR__ . '/Stub']);
+
+        $inject = new Inject();
+        $inject->collectProperty(EmptyVarValue::class, 'demo');
+    }
+
     protected function getContainer()
     {
         $container = Mockery::mock(ContainerInterface::class);
diff --git a/src/di/tests/Stub/EmptyVarValue.php b/src/di/tests/Stub/EmptyVarValue.php
new file mode 100644
index 0000000000..e3c6160987
--- /dev/null
+++ b/src/di/tests/Stub/EmptyVarValue.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * This file is part of Hyperf.
+ *
+ * @link     https://www.hyperf.io
+ * @document https://hyperf.wiki
+ * @contact  group@hyperf.io
+ * @license  https://github.com/hyperf/hyperf/blob/master/LICENSE
+ */
+namespace HyperfTest\Di\Stub;
+
+use Hyperf\Di\Annotation\Inject;
+
+class EmptyVarValue
+{
+    /**
+     * @Inject
+     * @var
+     */
+    private $demo;
+}