diff --git a/.vscode/launch.json b/.vscode/launch.json
index de76b07..834caad 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -4,6 +4,23 @@
     // 자세한 내용을 보려면 https://go.microsoft.com/fwlink/?linkid=830387을(를) 방문하세요.
     "version": "0.2.0",
     "configurations": [
+        {
+            // Use IntelliSense to find out which attributes exist for C# debugging
+            // Use hover for the description of the existing attributes
+            // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
+            "name": "graphStructure (Console)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            // If you have changed target frameworks, make sure to update the program path.
+            "program": "${workspaceFolder}/DataStructure/graphStructure/bin/Debug/net7.0/graphStructure.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}/DataStructure/graphStructure",
+            // For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
+            "console": "internalConsole",
+            "stopAtEntry": false
+        },
+
         {
             // Use IntelliSense to find out which attributes exist for C# debugging
             // Use hover for the description of the existing attributes
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
index 36681ee..a730df7 100644
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@@ -7,7 +7,7 @@
             "type": "process",
             "args": [
                 "build",
-                "${workspaceFolder}/DataStructure/treeStructure/treeStructure.csproj",
+                "${workspaceFolder}/DataStructure/graphStructure/graphStructure.csproj",
                 "/property:GenerateFullPaths=true",
                 "/consoleloggerparameters:NoSummary"
             ],
@@ -33,7 +33,7 @@
                 "watch",
                 "run",
                 "--project",
-                "${workspaceFolder}/DataStructure/treeStructure/treeStructure.csproj"
+                "${workspaceFolder}/DataStructure/hashTableStructure/hashTableStructure.csproj"
             ],
             "problemMatcher": "$msCompile"
         }
diff --git a/DataStructure/graphStructure/Program.cs b/DataStructure/graphStructure/Program.cs
index 3751555..04def45 100644
--- a/DataStructure/graphStructure/Program.cs
+++ b/DataStructure/graphStructure/Program.cs
@@ -1,2 +1,12 @@
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine("Hello, World!");
+using MainNamespace.Structure;
+
+namespace MainNamespace
+{
+    static class Program
+    {
+        static void Main(string[] args)
+        {
+            GraphClient.DoWork();
+        }
+    }
+}
\ No newline at end of file
diff --git a/DataStructure/graphStructure/Structure/Graph.cs b/DataStructure/graphStructure/Structure/Graph.cs
new file mode 100644
index 0000000..ba0ddd2
--- /dev/null
+++ b/DataStructure/graphStructure/Structure/Graph.cs
@@ -0,0 +1,51 @@
+namespace MainNamespace.Structure
+{
+    class Graph<T>
+    {
+        private List<GraphNode<T>> _nodeList;
+
+        public Graph()
+        {
+            _nodeList = new List<GraphNode<T>>();
+        }
+
+        public GraphNode<T> AddNode(T data)
+        {
+            GraphNode<T> node = new GraphNode<T>(data);
+            _nodeList.Add(node);
+            return node;
+        }
+
+        public GraphNode<T> AddNode(GraphNode<T> node)
+        {
+            _nodeList.Add(node);
+            return node;
+        }
+
+        public void AddEdge(GraphNode<T> from, GraphNode<T> to, bool oneway = true, int weight = 0)
+        {
+            from.Neighbors.Add(to);
+            from.Weights.Add(weight);
+
+            if (!oneway)
+            {
+                to.Neighbors.Add(from);
+                to.Weights.Add(weight);
+            }
+        }
+
+        internal void DebugPrintLinks()
+        {
+            foreach (var node in _nodeList)
+            {
+                for (int i = 0; i < node.Neighbors.Count; i++)
+                {
+                    var neighbor = node.Neighbors[i];
+                    var weight = node.Weights[i];
+
+                    System.Console.WriteLine($"[{node.Data}] ---{weight}--- [{neighbor.Data}]");
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/DataStructure/graphStructure/Structure/GraphClient.cs b/DataStructure/graphStructure/Structure/GraphClient.cs
new file mode 100644
index 0000000..e35845f
--- /dev/null
+++ b/DataStructure/graphStructure/Structure/GraphClient.cs
@@ -0,0 +1,23 @@
+namespace MainNamespace.Structure
+{
+    class GraphClient
+    {
+        public static void DoWork()
+        {
+            Graph<int> g = new Graph<int>();
+
+            var n1 = g.AddNode(10);
+            var n2 = g.AddNode(20);
+            var n3 = g.AddNode(30);
+            var n4 = g.AddNode(40);
+            var n5 = g.AddNode(50);
+
+            g.AddEdge(n1, n3, true, 1);
+            g.AddEdge(n2, n4, true, 2);
+            g.AddEdge(n3, n4, true, 3);
+            g.AddEdge(n3, n5, true, 10);
+
+            g.DebugPrintLinks();
+        }
+    }
+}
\ No newline at end of file
diff --git a/DataStructure/graphStructure/Structure/GraphNode.cs b/DataStructure/graphStructure/Structure/GraphNode.cs
new file mode 100644
index 0000000..96fb05e
--- /dev/null
+++ b/DataStructure/graphStructure/Structure/GraphNode.cs
@@ -0,0 +1,40 @@
+namespace MainNamespace.Structure
+{
+    class GraphNode<T>
+    {
+        private List<GraphNode<T>>? _neighbors;
+        private List<int>? _weights;
+
+        public T? Data { get; set; }
+
+        public GraphNode()
+        {
+
+        }
+
+        public GraphNode(T data)
+        {
+            this.Data = data;
+        }
+
+        public List<GraphNode<T>> Neighbors
+        {
+            get
+            {
+                _neighbors = _neighbors ?? new List<GraphNode<T>>();
+
+                return _neighbors;
+            }
+        }
+
+        public List<int> Weights
+        {
+            get
+            {
+                _weights = _weights ?? new List<int>();
+
+                return _weights;
+            }
+        }
+    }
+}
\ No newline at end of file