diff --git a/docs/MatrixOne/Reference/Functions-and-Operators/Vector/subvector.md b/docs/MatrixOne/Reference/Functions-and-Operators/Vector/subvector.md
new file mode 100644
index 0000000000..9ad7d54af3
--- /dev/null
+++ b/docs/MatrixOne/Reference/Functions-and-Operators/Vector/subvector.md
@@ -0,0 +1,47 @@
+# SUBVECTOR()
+
+## 函数说明
+
+`SUBVECTOR()` 函数用于从向量中提取子向量。
+
+## 函数语法
+
+```
+> SUBVECTOR(vec, pos, len)
+```
+
+## 参数释义
+
+|  参数   | 说明  |
+|  ----  | ----  |
+|vec     |	必需参数。从中提取子向量的源向量|
+|pos     |	必需参数。开始提取的位置。向量中的第一个位置是 1，如果 pos 为正，则函数从向量的开头提取。如果 pos 为负，则提取是从向量的末尾开始。|
+|len	 |  可选参数。要提取的维度数。默认从位置 pos 开始到向量末尾的子向量。如果 len 小于 1，则返回空向量。 |
+
+## 示例
+
+```sql
+mysql> SELECT SUBVECTOR("[1,2,3]", 2);
++-----------------------+
+| subvector([1,2,3], 2) |
++-----------------------+
+| [2, 3]                |
++-----------------------+
+1 row in set (0.01 sec)
+
+mysql> SELECT SUBVECTOR("[1,2,3]",-1,1);
++---------------------------+
+| subvector([1,2,3], -1, 1) |
++---------------------------+
+| [3]                       |
++---------------------------+
+1 row in set (0.00 sec)
+
+mysql> SELECT SUBVECTOR("[1,2,3]",-1,0);
++---------------------------+
+| subvector([1,2,3], -1, 0) |
++---------------------------+
+| []                        |
++---------------------------+
+1 row in set (0.00 sec)
+```
diff --git a/docs/MatrixOne/Reference/Functions-and-Operators/matrixone-function-list.md b/docs/MatrixOne/Reference/Functions-and-Operators/matrixone-function-list.md
index f9ffa7070f..88e2801aae 100644
--- a/docs/MatrixOne/Reference/Functions-and-Operators/matrixone-function-list.md
+++ b/docs/MatrixOne/Reference/Functions-and-Operators/matrixone-function-list.md
@@ -136,10 +136,11 @@
 | [ABS()](./Vector/misc.md)                            | 用于计算向量的绝对值|
 | [CAST()](./Vector/misc.md)                           | 用于显式将一个向量从一个向量类型转换为另一个向量类型|
 | [SUMMATION()](./Vector/misc.md)                      | 返回向量中所有元素的总和|
-| [INNER_PRODUCT()](./Vector/inner_product.md)         | 用于计算两个向量之间的内积/点积|
 | [COSINE_SIMILARITY()](./Vector/cosine_similarity.md) | 衡量了两个向量之间夹角的余弦值，通过它们在多维空间中的接近程度来表示它们的相似性|
+| [INNER_PRODUCT()](./Vector/inner_product.md)         | 用于计算两个向量之间的内积/点积|
 | [L1_NORM()](./Vector/l1_norm.md)                     | 用于计算 l1/曼哈顿/TaxiCab 范数|
 | [L2_NORM()](./Vector/l2_norm.md)                     | 用于计算 l2/欧几里得范数|
+| [SUBVECTOR()](./Vector/subvector.md)                 | 用于从向量中提取子向量|
 | [VECTOR_DIMS()](./Vector/vector_dims.md)             | 用于确定向量的维度|
 
 ## 表函数
diff --git a/mkdocs.yml b/mkdocs.yml
index 03a300387f..6deb13b059 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -559,11 +559,12 @@ nav:
           - 向量类:
             - 基本操作符: MatrixOne/Reference/Functions-and-Operators/Vector/arithmetic.md
             - 数学计算: MatrixOne/Reference/Functions-and-Operators/Vector/misc.md
-            - 内积计算: MatrixOne/Reference/Functions-and-Operators/Vector/inner_product.md
-            - 余弦相似度计算: MatrixOne/Reference/Functions-and-Operators/Vector/cosine_similarity.md
-            - L1 范数函数: MatrixOne/Reference/Functions-and-Operators/Vector/l1_norm.md
-            - L2 范数函数: MatrixOne/Reference/Functions-and-Operators/Vector/l2_norm.md
-            - 维度函数: MatrixOne/Reference/Functions-and-Operators/Vector/vector_dims.md
+            - COSINE_SIMILARITY(): MatrixOne/Reference/Functions-and-Operators/Vector/cosine_similarity.md
+            - INNER_PRODUCT(): MatrixOne/Reference/Functions-and-Operators/Vector/inner_product.md
+            - L1_NORM(): MatrixOne/Reference/Functions-and-Operators/Vector/l1_norm.md
+            - L2_NORM(): MatrixOne/Reference/Functions-and-Operators/Vector/l2_norm.md
+            - SUBVECTOR(): MatrixOne/Reference/Functions-and-Operators/Vector/subvector.md
+            - VECTOR_DIMS(): MatrixOne/Reference/Functions-and-Operators/Vector/vector_dims.md
           - 表函数:
             - UNNEST(): MatrixOne/Reference/Functions-and-Operators/Table/unnest.md
           - 窗口函数: