diff --git a/pyknp/juman/juman.py b/pyknp/juman/juman.py
index 26f5a56..7022e1b 100644
--- a/pyknp/juman/juman.py
+++ b/pyknp/juman/juman.py
@@ -52,12 +52,13 @@ def __init__(self,
         self.ignorepattern = ignorepattern
         self.pattern = pattern
         if server is not None:
-            self.analyzer = Analyzer(backend='socket', server=server, port=port, socket_option='RUN -e2\n')
+            self.analyzer = Analyzer(backend='socket', timeout=timeout, server=server, port=port,
+                                     socket_option='RUN -e2\n')
         else:
             cmds = [self.command] + self.options
             if self.rcfile:
                 cmds += ['-r', self.rcfile]
-            self.analyzer = Analyzer(backend='subprocess', multithreading=multithreading, command=cmds)
+            self.analyzer = Analyzer(backend='subprocess', multithreading=multithreading, timeout=timeout, command=cmds)
 
         if self.rcfile and not os.path.isfile(os.path.expanduser(self.rcfile)):
             raise Exception("Can't read rcfile (%s)!" % self.rcfile)
diff --git a/pyknp/knp/knp.py b/pyknp/knp/knp.py
index 17b596a..7bd7f00 100644
--- a/pyknp/knp/knp.py
+++ b/pyknp/knp/knp.py
@@ -52,12 +52,13 @@ def __init__(self,
         self.rcfile = rcfile
         self.pattern = pattern
         if server is not None:
-            self.analyzer = Analyzer(backend='socket', server=server, port=port, socket_option='RUN -tab -normal\n')
+            self.analyzer = Analyzer(backend='socket', timeout=timeout, server=server, port=port,
+                                     socket_option='RUN -tab -normal\n')
         else:
             cmds = [self.command] + self.options
             if self.rcfile:
                 cmds += ['-r', self.rcfile]
-            self.analyzer = Analyzer(backend='subprocess', multithreading=multithreading, command=cmds)
+            self.analyzer = Analyzer(backend='subprocess', multithreading=multithreading, timeout=timeout, command=cmds)
         self.jumanpp = jumanpp
 
         if self.rcfile and not os.path.isfile(os.path.expanduser(self.rcfile)):
diff --git a/pyknp/utils/analyzer.py b/pyknp/utils/analyzer.py
index 58f346d..3becf24 100644
--- a/pyknp/utils/analyzer.py
+++ b/pyknp/utils/analyzer.py
@@ -12,9 +12,18 @@ class Analyzer(object):
         command (list): サブプロセスに渡すコマンド
     """
 
-    def __init__(self, backend, multithreading=False, server=None, port=None, socket_option=None, command=None):
+    def __init__(self,
+                 backend,
+                 multithreading=False,
+                 server=None,
+                 port=None,
+                 socket_option=None,
+                 command=None,
+                 timeout=180,
+                 ):
         self.backend = backend
         self.multithreading = multithreading
+        self.timeout = timeout
 
         self.socket = None
         self.server = server
@@ -30,9 +39,9 @@ def query(self, input_str, pattern):
                 self.socket = Socket(self.server, self.port, self.socket_option)
             else:
                 if self.multithreading is True:
-                    self.subprocess = SubprocessThreadSafe(self.command)
+                    self.subprocess = SubprocessThreadSafe(self.command, timeout=self.timeout)
                 else:
-                    self.subprocess = Subprocess(self.command)
+                    self.subprocess = Subprocess(self.command, timeout=self.timeout)
 
         if self.socket:
             return self.socket.query(input_str, pattern=pattern)