diff --git a/Chapter3.2 Parameters.ipynb b/Chapter3.2 Parameters.ipynb
index 03a8968..460926d 100644
--- a/Chapter3.2 Parameters.ipynb	
+++ b/Chapter3.2 Parameters.ipynb	
@@ -36,7 +36,7 @@
     "model = ConcreteModel()\n",
     "model.I = Set(initialize = [i for i in range(3)])  \n",
     "model.J = Set(initialize = [i for i in range(3)])\n",
-    "model.c = Param(model.I, model.J, default = 1) # 参数c是一个4*4的矩阵 并且初始值全部为1\n",
+    "model.c = Param(model.I, model.J, default = 1) # 参数c是一个3*3的矩阵 并且初始值全部为1\n",
     "print(model.c[0,0])"
    ]
   },