diff --git a/src/gausskernel/dbmind/db4ai/executor/matrix.cpp b/src/gausskernel/dbmind/db4ai/executor/matrix.cpp
index 60144d1af..cd2b6baac 100644
--- a/src/gausskernel/dbmind/db4ai/executor/matrix.cpp
+++ b/src/gausskernel/dbmind/db4ai/executor/matrix.cpp
@@ -21,6 +21,14 @@
  * ---------------------------------------------------------------------------------------
  */
 
+/*Matrix refers to a set of complex numbers or real numbers arranged in a rectangular array in mathematics. 
+It originated from the square matrix composed of coefficients and constants of equations. It was first proposed 
+by the 19th century British mathematician Kelly. It is a common tool in advanced algebra, and its operation is
+an important problem in the field of numerical analysis. Decomposition of a matrix into a combination of simple
+matrices can simplify the operation of the matrix in theory and practical application.
+
+For a matrix, at least the following operations should be included: addition, multiplication, transposition, eigenvalue
+calculation, and for a square matrix, determinant calculation is also required.*/
 #include "db4ai/matrix.h"
 
 #define MATRIX_LIMITED_OUTPUT 30