diff --git a/app/controllers/staffs/accounts_controller.rb b/app/controllers/staffs/accounts_controller.rb
index bf17179..e601920 100644
--- a/app/controllers/staffs/accounts_controller.rb
+++ b/app/controllers/staffs/accounts_controller.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class Staffs::AccountsController < ApplicationController
+  before_action :set_account, except: :index
+
   # GET /staff/accounts
   def index
     authorize %i[staff account]
@@ -9,4 +11,15 @@ class Staffs::AccountsController < ApplicationController
       policy_scope_class: Staff::AccountPolicy::Scope,
     )
   end
+
+  # GET /staff/accounts/:nickname
+  def show
+    authorize [:staff, @account]
+  end
+
+private
+
+  def set_account
+    @account = Account.find_by! nickname: params[:nickname]
+  end
 end
diff --git a/app/policies/staff/account_policy.rb b/app/policies/staff/account_policy.rb
index c3ba386..d22c6cf 100644
--- a/app/policies/staff/account_policy.rb
+++ b/app/policies/staff/account_policy.rb
@@ -5,6 +5,10 @@ class Staff::AccountPolicy < ApplicationPolicy
     account&.superuser?
   end
 
+  def show?
+    account&.superuser?
+  end
+
   class Scope < Scope
     def resolve
       return scope.all if account&.superuser?
diff --git a/app/views/staffs/accounts/index.html.erb b/app/views/staffs/accounts/index.html.erb
index ebc8a06..bcd0153 100644
--- a/app/views/staffs/accounts/index.html.erb
+++ b/app/views/staffs/accounts/index.html.erb
@@ -41,7 +41,14 @@
               </span>
             <% end %>
           </td>
-          <td></td>
+          <td>
+            <% if policy([:staff, account]).show? %>
+              <%= link_to [:staff, account],
+                          role: :button, class: 'btn btn-light btn-sm' do %>
+                <i class="far fa-eye"></i>
+              <% end %>
+            <% end %>
+          </td>
         </tr>
       <% end %>
     </tbody>
diff --git a/app/views/staffs/accounts/show.html.erb b/app/views/staffs/accounts/show.html.erb
new file mode 100644
index 0000000..2017d89
--- /dev/null
+++ b/app/views/staffs/accounts/show.html.erb
@@ -0,0 +1,36 @@
+<div class="container">
+  <nav aria-label="breadcrumb">
+    <ol class="breadcrumb">
+      <li class="breadcrumb-item">
+        <%= link_to translate(:staff_services), staff_root_path %>
+      </li>
+
+      <li class="breadcrumb-item">
+        <%= link_to Account.model_name.human(count: 0), staff_accounts_path %>
+      </li>
+
+      <li class="breadcrumb-item active" aria-current="page">
+        <%= @account.nickname %>
+      </li>
+    </ol>
+  </nav>
+
+  <% if @account.superuser? %>
+    <div class="mb-4">
+      <span class="badge badge-primary">
+        <%= translate :superuser %>
+      </span>
+    </div>
+  <% end %>
+
+  <dl>
+    <dt><%= Account.human_attribute_name :id %></dt>
+    <dd><%= @account.id %></dd>
+
+    <dt><%= Account.human_attribute_name :nickname %></dt>
+    <dd><%= @account.nickname %></dd>
+
+    <dt><%= Account.human_attribute_name :public_name %></dt>
+    <dd><%= @account.public_name %></dd>
+  </dl>
+</div>
diff --git a/config/routes.rb b/config/routes.rb
index 6bc6813..4b9fda6 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -48,7 +48,7 @@ Rails.application.routes.draw do
 
     get '/sidekiq', to: redirect('/', status: 307), as: :forbidden_sidekiq
 
-    resources :accounts, only: :index
+    resources :accounts, param: :nickname, only: %i[index show]
 
     resources :people, only: %i[index show] do
       resources :person_comments,
diff --git a/spec/requests/staff/accounts/show_spec.rb b/spec/requests/staff/accounts/show_spec.rb
new file mode 100644
index 0000000..a60bf22
--- /dev/null
+++ b/spec/requests/staff/accounts/show_spec.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe 'GET /staff/accounts/:nickname' do
+  let!(:some_account) { create :usual_account }
+  let(:current_account) { create :usual_account }
+
+  def make_request
+    get "/staff/accounts/#{some_account.nickname}"
+  end
+
+  before do
+    sign_in current_account.user if current_account&.user
+    make_request
+  end
+
+  for_account_types nil, :guest, :usual do
+    specify do
+      expect(response).to have_http_status :forbidden
+    end
+  end
+
+  for_account_types :superuser do
+    specify do
+      expect(response).to have_http_status :ok
+    end
+  end
+end