diff --git a/706_design_hashmap/Cargo.lock b/706_design_hashmap/Cargo.lock
new file mode 100644
index 0000000..8c2e22f
--- /dev/null
+++ b/706_design_hashmap/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "design_hashmap"
+version = "0.1.0"
diff --git a/706_design_hashmap/Cargo.toml b/706_design_hashmap/Cargo.toml
new file mode 100644
index 0000000..4b01ffa
--- /dev/null
+++ b/706_design_hashmap/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "design_hashmap"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
diff --git a/706_design_hashmap/src/lib.rs b/706_design_hashmap/src/lib.rs
new file mode 100644
index 0000000..78c880e
--- /dev/null
+++ b/706_design_hashmap/src/lib.rs
@@ -0,0 +1,24 @@
+#[derive(Clone)]
+struct ListNode {
+    key: i32,
+    value: i32,
+    next: Option<Box<ListNode>>,
+}
+
+pub struct MyHashMap {
+    buckets: Vec<Option<Box<ListNode>>>,
+}
+
+impl MyHashMap {
+    fn new() -> Self {
+        Self {
+            buckets: Vec::with_capacity(8192),
+        }
+    }
+
+    fn put(&self, key: i32, value: i32) {}
+
+    fn get(&self, key: i32) -> i32 {}
+
+    fn remove(&self, key: i32) {}
+}