diff --git a/lib/fluent/load.rb b/lib/fluent/load.rb
index 874f3b3b73..200f09c8ec 100644
--- a/lib/fluent/load.rb
+++ b/lib/fluent/load.rb
@@ -21,7 +21,6 @@
 require 'fluent/env'
 require 'fluent/version'
 require 'fluent/log'
-require 'fluent/status'
 require 'fluent/config'
 require 'fluent/engine'
 require 'fluent/rpc'
diff --git a/lib/fluent/output.rb b/lib/fluent/output.rb
index 491d8dd34e..fea06dc937 100644
--- a/lib/fluent/output.rb
+++ b/lib/fluent/output.rb
@@ -227,9 +227,6 @@ def configure(conf)
 
         @secondary.secondary_init(self)
       end
-
-      Status.register(self, "queue_size") { @buffer.queue_size }
-      Status.register(self, "emit_count") { @emit_count }
     end
 
     def start
diff --git a/lib/fluent/plugin/in_status.rb b/lib/fluent/plugin/in_status.rb
deleted file mode 100644
index c6aefeb5a9..0000000000
--- a/lib/fluent/plugin/in_status.rb
+++ /dev/null
@@ -1,76 +0,0 @@
-#
-# Fluentd
-#
-#    Licensed under the Apache License, Version 2.0 (the "License");
-#    you may not use this file except in compliance with the License.
-#    You may obtain a copy of the License at
-#
-#        http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS,
-#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#    See the License for the specific language governing permissions and
-#    limitations under the License.
-#
-
-module Fluent
-  class StatusInput < Input
-    Plugin.register_input('status', self)
-
-    def initialize
-      super
-    end
-
-    config_param :emit_interval, :time, :default => 60
-    config_param :tag, :string
-
-    class TimerWatcher < Coolio::TimerWatcher
-      def initialize(interval, repeat, log, &callback)
-        @callback = callback
-        @log = log
-        super(interval, repeat)
-      end
-
-      def on_timer
-        @callback.call
-      rescue
-        # TODO log?
-        @log.error $!.to_s
-        @log.error_backtrace
-      end
-    end
-
-    def configure(conf)
-      super
-      $log.warn "in_status plugin will be removed v0.14 or later. Use in_monitor_agent instead"
-    end
-
-    def start
-      @loop = Coolio::Loop.new
-      @timer = TimerWatcher.new(@emit_interval, true, log, &method(:on_timer))
-      @loop.attach(@timer)
-      @thread = Thread.new(&method(:run))
-    end
-
-    def shutdown
-      @loop.watchers.each {|w| w.detach }
-      @loop.stop
-      @thread.join
-    end
-
-    def run
-      @loop.run
-    rescue
-      log.error "unexpected error", :error=>$!.to_s
-      log.error_backtrace
-    end
-
-    def on_timer
-      now = Engine.now
-      Status.each {|record|
-        router.emit(@tag, now, record)
-      }
-    end
-  end
-end
diff --git a/lib/fluent/status.rb b/lib/fluent/status.rb
deleted file mode 100644
index 5388f09a4c..0000000000
--- a/lib/fluent/status.rb
+++ /dev/null
@@ -1,48 +0,0 @@
-#
-# Fluentd
-#
-#    Licensed under the Apache License, Version 2.0 (the "License");
-#    you may not use this file except in compliance with the License.
-#    You may obtain a copy of the License at
-#
-#        http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS,
-#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-#    See the License for the specific language governing permissions and
-#    limitations under the License.
-#
-
-module Fluent
-  class StatusClass
-    def initialize
-      @entries = {}
-      @mutex = Mutex.new
-    end
-
-    def register(instance, name, &block)
-      @mutex.synchronize {
-        (@entries[instance.object_id] ||= {})[name] = block
-      }
-      nil
-    end
-
-    def each(&block)
-      @mutex.synchronize {
-        @entries.each {|obj_id,hash|
-          record = {}
-          hash.each_pair {|name,block|
-            record[name] = block.call
-          }
-          block.call(record)
-        }
-      }
-    end
-  end
-
-  # Don't use this class from plugins.
-  # The interface may be changed
-  Status = StatusClass.new
-end
-
diff --git a/test/plugin/test_in_status.rb b/test/plugin/test_in_status.rb
deleted file mode 100644
index 5ca754ff3f..0000000000
--- a/test/plugin/test_in_status.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-require_relative '../helper'
-require 'fluent/test'
-
-class StatusInputTest < Test::Unit::TestCase
-  def setup
-    Fluent::Test.setup
-  end
-
-  CONFIG = %[
-    emit_interval 1
-    tag t1
-  ]
-
-  def create_driver(conf=CONFIG)
-    Fluent::Test::InputTestDriver.new(Fluent::StatusInput).configure(conf)
-  end
-
-  def test_configure
-    d = create_driver
-    assert_equal(1, d.instance.emit_interval)
-    assert_equal("t1", d.instance.tag)
-  end
-
-  def test_emit
-    stub(Fluent::Status).each { |b|
-      b.call("answer" => "42")
-    }
-
-    d = create_driver
-    d.run do
-      sleep 2
-    end
-
-    emits = d.emits
-    assert(emits.length > 0)
-    assert_equal({"answer" => "42"}, emits[0][2])
-    assert(emits[0][1].is_a?(Fluent::EventTime))
-  end
-end