diff --git a/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeBinary.py b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeBinary.py
new file mode 100644
index 0000000000000000000000000000000000000000..87ac1ba19287c7e9ae90c3b85b9727d7f6a1f5b7
--- /dev/null
+++ b/tests/develop-test/5-taos-tools/taosdump/taosdumpTestTypeBinary.py
@@ -0,0 +1,124 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+import os
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import *
+import subprocess
+
+
+class TDTestCase:
+    def caseDescription(self):
+        '''
+        case1<sdsang>: [TD-12526] taosdump supports binary
+        '''
+        return
+
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+        self.tmpdir = "tmp"
+
+    def getBuildPath(self):
+        selfPath = os.path.dirname(os.path.realpath(__file__))
+
+        if ("community" in selfPath):
+            projPath = selfPath[:selfPath.find("community")]
+        else:
+            projPath = selfPath[:selfPath.find("tests")]
+
+        buildPath = ""
+        for root, dirs, files in os.walk(projPath):
+            if ("taosdump" in files):
+                rootRealPath = os.path.dirname(os.path.realpath(root))
+                if ("packaging" not in rootRealPath):
+                    buildPath = root[:len(root) - len("/build/bin")]
+                    break
+        return buildPath
+
+    def run(self):
+        tdSql.prepare()
+
+        tdSql.execute("drop database if exists db")
+        tdSql.execute("create database db  days 11 keep 3649 blocks 8 ")
+
+        tdSql.execute("use db")
+        tdSql.execute(
+            "create table st(ts timestamp, c1 BINARY(5), c2 BINARY(5)) tags(btag BINARY(5))")
+        tdSql.execute("create table t1 using st tags('test')")
+        tdSql.execute("insert into t1 values(1640000000000, '01234', '56789')")
+        tdSql.execute("insert into t1 values(1640000000001, 'abcd', 'efgh')")
+        tdSql.execute("create table t2 using st tags(NULL)")
+        tdSql.execute("insert into t2 values(1640000000000, NULL, NULL)")
+
+        buildPath = self.getBuildPath()
+        if (buildPath == ""):
+            tdLog.exit("taosdump not found!")
+        else:
+            tdLog.info("taosdump found in %s" % buildPath)
+        binPath = buildPath + "/build/bin/"
+
+        if not os.path.exists(self.tmpdir):
+            os.makedirs(self.tmpdir)
+        else:
+            print("directory exists")
+            os.system("rm -rf %s" % self.tmpdir)
+            os.makedirs(self.tmpdir)
+
+        os.system("%staosdump --databases db -o %s" % (binPath, self.tmpdir))
+
+#        sys.exit(1)
+        tdSql.execute("drop database db")
+
+        os.system("%staosdump -i %s" % (binPath, self.tmpdir))
+
+        tdSql.query("show databases")
+        tdSql.checkRows(1)
+
+        tdSql.execute("use db")
+        tdSql.query("show stables")
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 0, 'st')
+
+        tdSql.query("show tables")
+        tdSql.checkRows(2)
+        tdSql.checkData(0, 0, 't2')
+        tdSql.checkData(1, 0, 't1')
+
+        tdSql.query("select btag from st")
+        tdSql.checkRows(2)
+        tdSql.checkData(0, 0, None)
+        tdSql.checkData(1, 0, "test")
+
+        tdSql.query("select * from st where btag = 'test'")
+        tdSql.checkRows(2)
+        tdSql.checkData(0, 1, "01234")
+        tdSql.checkData(0, 2, "56789")
+        tdSql.checkData(1, 1, "abcd")
+        tdSql.checkData(1, 2, "efgh")
+
+        tdSql.query("select * from st where btag is null")
+        tdSql.checkRows(1)
+        tdSql.checkData(0, 1, None)
+        tdSql.checkData(0, 2, None)
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
diff --git a/tests/develop-test/fulltest-tools.sh b/tests/develop-test/fulltest-tools.sh
index ca02f1605c9ceb2443105561a897d8279109fede..104dd5b7c80f66323f8e6396a4920d1bacf2166d 100755
--- a/tests/develop-test/fulltest-tools.sh
+++ b/tests/develop-test/fulltest-tools.sh
@@ -10,6 +10,7 @@ python3 ./test.py -f 5-taos-tools/taosdump/taosdumpTestTypeUnsignedBigInt.py
 python3 ./test.py -f 5-taos-tools/taosdump/taosdumpTestTypeUnsignedInt.py
 python3 ./test.py -f 5-taos-tools/taosdump/taosdumpTestTypeUnsignedSmallInt.py
 python3 ./test.py -f 5-taos-tools/taosdump/taosdumpTestTypeUnsignedTinyInt.py
+python3 ./test.py -f 5-taos-tools/taosdump/taosdumpTestTypeBinary.py
 python3 ./test.py -f 5-taos-tools/taosbenchmark/limit_offset_json.py
 python3 ./test.py -f 5-taos-tools/taosbenchmark/sml_json_alltypes.py
 python3 ./test.py -f 5-taos-tools/taosbenchmark/auto_create_table_json.py
@@ -21,5 +22,5 @@ python3 ./test.py -f 5-taos-tools/taosbenchmark/sml_interlace.py
 python3 ./test.py -f 5-taos-tools/taosbenchmark/sml_telnet_alltypes.py
 python3 ./test.py -f 5-taos-tools/taosbenchmark/subscripe_json.py
 python3 ./test.py -f 5-taos-tools/taosbenchmark/default_json.py
-python3 ./test.py -f 5-taos-tools/taosbenchmark/invalid_commandline.py 
-python3 ./test.py -f 5-taos-tools/taosbenchmark/sample_csv_json.py
\ No newline at end of file
+python3 ./test.py -f 5-taos-tools/taosbenchmark/invalid_commandline.py
+python3 ./test.py -f 5-taos-tools/taosbenchmark/sample_csv_json.py