diff --git a/src/components/modal/AddColumn.tsx b/src/components/modal/AddColumn.tsx
index edfc4a2..5cd2832 100644
--- a/src/components/modal/AddColumn.tsx
+++ b/src/components/modal/AddColumn.tsx
@@ -1,10 +1,11 @@
-import { Component, For } from 'solid-js';
+import { Component, For, Switch, Match, createSignal, type JSX } from 'solid-js';
 
 import Bell from 'heroicons/24/outline/bell.svg';
 import GlobeAlt from 'heroicons/24/outline/globe-alt.svg';
 import Heart from 'heroicons/24/outline/heart.svg';
 import Home from 'heroicons/24/outline/home.svg';
 import MagnifyingGlass from 'heroicons/24/outline/magnifying-glass.svg';
+import Server from 'heroicons/24/outline/server.svg';
 import User from 'heroicons/24/outline/user.svg';
 // import BookmarkIcon from 'heroicons/24/outline/bookmark.svg';
 // import ChatBubbleLeftRight from 'heroicons/24/outline/chat-bubble-left-right.svg';
@@ -16,6 +17,7 @@ import {
   createNotificationColumn,
   createPostsColumn,
   createReactionsColumn,
+  createRelaysColumn,
   createSearchColumn,
 } from '@/core/column';
 import useConfig from '@/core/useConfig';
@@ -23,17 +25,78 @@ import { useRequestCommand } from '@/hooks/useCommandBus';
 import { useTranslation } from '@/i18n/useTranslation';
 import usePubkey from '@/nostr/usePubkey';
 import ensureNonNull from '@/utils/ensureNonNull';
+import { isWebSocketUrl } from '@/utils/url';
 
 type AddColumnProps = {
   onClose: () => void;
 };
 
+type AddRelayColumnProps = {
+  addRelaysColumn: (relayUrls: string[]) => void;
+};
+
+const AddRelaysColumn: Component<AddRelayColumnProps> = (props) => {
+  const i18n = useTranslation();
+  const { config } = useConfig();
+
+  const [relayUrl, setRelayUrl] = createSignal<string>('');
+
+  const handleSubmit: JSX.EventHandler<HTMLFormElement, Event> = (ev) => {
+    ev.preventDefault();
+
+    const url = relayUrl();
+    if (!isWebSocketUrl(url)) {
+      window.alert('Invalid url');
+      return;
+    }
+
+    props.addRelaysColumn([url]);
+  };
+
+  return (
+    <div class="p-8">
+      <form class="flex gap-1" onSubmit={handleSubmit}>
+        <input
+          class="flex-1 rounded-md border-border bg-bg placeholder:text-fg-secondary focus:border-border focus:ring-primary"
+          type="text"
+          name="url"
+          placeholder="wss://..."
+          pattern="wss?:\/\/.*"
+          required
+          onChange={(ev) => setRelayUrl(ev.currentTarget.value)}
+        />
+        <button
+          class="rounded border border-primary px-4 py-1 font-bold text-primary"
+          type="submit"
+        >
+          {i18n.t('column.addRelayColumn.add')}
+        </button>
+      </form>
+      <div class="flex flex-col items-start gap-1 pt-8">
+        <For each={config().relayUrls}>
+          {(url) => (
+            <button
+              type="button"
+              class="text-fg-secondary hover:text-fg"
+              onClick={() => props.addRelaysColumn([url])}
+            >
+              {url}
+            </button>
+          )}
+        </For>
+      </div>
+    </div>
+  );
+};
+
 const AddColumn: Component<AddColumnProps> = (props) => {
   const i18n = useTranslation();
   const pubkey = usePubkey();
   const { saveColumn } = useConfig();
   const request = useRequestCommand();
 
+  const [detailComponent, setDetailComponent] = createSignal<string | undefined>(undefined);
+
   const finish = () => {
     props.onClose();
     request({ command: 'moveToLastColumn' }).catch((err) => console.error(err));
@@ -58,6 +121,11 @@ const AddColumn: Component<AddColumnProps> = (props) => {
     finish();
   };
 
+  const addRelaysColumn = (relayUrls: string[]) => {
+    saveColumn(createRelaysColumn({ relayUrls }));
+    finish();
+  };
+
   const addSearchColumn = () => {
     saveColumn(createSearchColumn({ query: '' }));
     finish();
@@ -81,32 +149,37 @@ const AddColumn: Component<AddColumnProps> = (props) => {
     {
       name: () => i18n.t('column.home'),
       icon: () => <Home />,
-      onClick: addFollowingColumn,
+      onSelect: addFollowingColumn,
     },
     {
       name: () => i18n.t('column.notification'),
       icon: () => <Bell />,
-      onClick: addNotificationColumn,
+      onSelect: addNotificationColumn,
+    },
+    {
+      name: () => i18n.t('column.relay'),
+      icon: () => <Server />,
+      onSelect: () => setDetailComponent('AddRelaysColumn'),
     },
     {
       name: () => i18n.t('column.japanese'),
       icon: () => <GlobeAlt />,
-      onClick: addJapanRelaysColumn,
+      onSelect: addJapanRelaysColumn,
     },
     {
       name: () => i18n.t('column.search'),
       icon: () => <MagnifyingGlass />,
-      onClick: addSearchColumn,
+      onSelect: addSearchColumn,
     },
     {
       name: () => i18n.t('column.myPosts'),
       icon: () => <User />,
-      onClick: addMyPostsColumn,
+      onSelect: addMyPostsColumn,
     },
     {
       name: () => i18n.t('column.myReactions'),
       icon: () => <Heart />,
-      onClick: addMyReactionsColumn,
+      onSelect: addMyReactionsColumn,
     },
     // TODO channel <ChatBubbleLeftRight />
     // TODO bookmark <BookmarkIcon />
@@ -114,19 +187,27 @@ const AddColumn: Component<AddColumnProps> = (props) => {
 
   return (
     <BasicModal onClose={props.onClose}>
-      <div class="flex flex-wrap p-4">
-        <For each={menu}>
-          {(menuItem) => (
-            <button
-              class="flex basis-1/2 flex-col items-center gap-2 py-8 hover:text-primary sm:basis-1/4"
-              onClick={menuItem.onClick}
-            >
-              <span class="inline-block size-8">{menuItem.icon()}</span>
-              {menuItem.name()}
-            </button>
-          )}
-        </For>
-      </div>
+      <Switch
+        fallback={
+          <div class="flex flex-wrap p-4">
+            <For each={menu}>
+              {(menuItem) => (
+                <button
+                  class="flex basis-1/2 flex-col items-center gap-2 py-8 hover:text-primary sm:basis-1/4"
+                  onClick={menuItem.onSelect}
+                >
+                  <span class="inline-block size-8">{menuItem.icon()}</span>
+                  {menuItem.name()}
+                </button>
+              )}
+            </For>
+          </div>
+        }
+      >
+        <Match when={detailComponent() === 'AddRelaysColumn'}>
+          <AddRelaysColumn addRelaysColumn={addRelaysColumn} />
+        </Match>
+      </Switch>
     </BasicModal>
   );
 };
diff --git a/src/locales/ja.ts b/src/locales/ja.ts
index 7f00c55..f674acd 100644
--- a/src/locales/ja.ts
+++ b/src/locales/ja.ts
@@ -37,6 +37,9 @@ export default {
     back: '戻る',
     loadLatest: '最新の投稿を読み込む',
     loadOld: '古い投稿を読み込む',
+    addRelayColumn: {
+      add: '追加',
+    },
     config: {
       columnWidth: 'カラム幅',
       widest: '特大',