diff --git a/src/eAcs.erl b/src/eAcs.erl
index 5b5187d..3b4a479 100644
--- a/src/eAcs.erl
+++ b/src/eAcs.erl
@@ -7,6 +7,8 @@
    , strSize/2               %% 获取utf8字符串的长度
 ]).
 
+-define(RW, 42).              %% 替换字符的utf8code
+
 %% state 0 is the root node
 %% Goto:  State -> #{Word -> State}
 %% failOut: State -> {FailState, BinStr}
@@ -132,14 +134,73 @@ getOutputIs(State) ->
 %% *************************************** matchSw end   ***************************************************************
 %% *************************************** replaceSw start *************************************************************
 replaceSw(BinStr) ->
-   MatchBIMWs = doMatchRs(BinStr, _TotalSize = byte_size(BinStr) - 1, _Index = 1, _State = 0, _MatchList = []),
-   doReplaceSw(lists:reverse(MatchBIMWs), 0, BinStr, <<>>).
+   TotalSize = byte_size(BinStr),
+   MatchBIMWs = doMatchRs(BinStr, TotalSize - 1, _Index = 1, _State = 0, _MatchList = []),
+   %io:format("IMY******************* ~p~n", [lists:reverse(MatchBIMWs)]),
+   doReplaceSw(lists:reverse(MatchBIMWs), BinStr, TotalSize, _StartPos = 0, <<>>).
 
 %% 从前往后替换
-doReplaceSw([], _BinStr, _StartPos, Acc) ->
-   iolist_to_binary(Acc);
-doReplaceSw([{CurByteIndex, MatchWordCnt, _CurWordIndex} | MatchBIMWs], _BinStr, StartPos, Acc) ->
-   iolist_to_binary(Acc).
+doReplaceSw([], BinStr, TotalSize, StartPos, BinAcc) ->
+   case TotalSize > StartPos of
+      true ->
+         <<BinAcc/binary, (binary:part(BinStr, StartPos, TotalSize - StartPos))/binary>>;
+      _ ->
+         BinAcc
+   end;
+doReplaceSw([{CurByteIndex, MatchWordCnt, _CurWordIndex} | MatchBIMWs], BinStr, TotalSize, StartPos, BinAcc) ->
+   {EndByteIndex, FilterWs} = getMatchWords(MatchWordCnt, BinStr, CurByteIndex, _BslCnt = 0, _Utf8Code = 0, []),
+   RPStr = unicode:characters_to_binary(FilterWs, utf8),
+   case StartPos =< EndByteIndex of
+      true ->
+         NewBinAcc = <<BinAcc/binary, (binary:part(BinStr, StartPos, EndByteIndex - StartPos + 1))/binary, RPStr/binary>>;
+      _ ->
+         NewBinAcc = <<BinAcc/binary, RPStr/binary>>
+   end,
+   doReplaceSw(MatchBIMWs, BinStr, TotalSize, CurByteIndex + 1, NewBinAcc).
+
+getMatchWords(0, _BinStr, ByteIndex, _BslCnt, _Utf8Code, FilterWs) ->
+   {ByteIndex, FilterWs};
+getMatchWords(MatchWordCnt, BinStr, ByteIndex, BslCnt, Utf8Code, FilterWs) ->
+   Byte = binary:at(BinStr, ByteIndex),
+   %io:format("IMY****************~p ~n", [Byte]),
+   if
+      Byte band 2#10000000 == 0 ->
+         %% ASCII 查看是否特殊字符 是就维护原样
+         case acsSpw:getSpw(Byte) of
+            true ->
+               %% 是特殊词
+               getMatchWords(MatchWordCnt, BinStr, ByteIndex - 1, 0, 0, [Byte | FilterWs]);
+            _ ->
+               %% 不是特殊词
+               getMatchWords(MatchWordCnt - 1, BinStr, ByteIndex - 1, 0, 0, [?RW | FilterWs])
+         end;
+      Byte band 2#10000000 == 128 ->
+         Code = Byte band 2#00111111,
+         getMatchWords(MatchWordCnt, BinStr, ByteIndex - 1, BslCnt + 6, Code bsl BslCnt + Utf8Code, FilterWs);
+      true ->
+         %io:format("IMY****************~p", [Byte]),
+         case BslCnt of
+            6 ->
+               Code = Byte band 2#00011111;
+            12 ->
+               Code = Byte band 2#00001111;
+            18 ->
+               Code = Byte band 2#00000111;
+            24 ->
+               Code = Byte band 2#00000011;
+            30 ->
+               Code = Byte band 2#00000001
+         end,
+         FullWord = Code bsl BslCnt + Utf8Code,
+         case acsSpw:getSpw(FullWord) of
+            true ->
+               %% 是特殊词
+               getMatchWords(MatchWordCnt, BinStr, ByteIndex - 1, 0, 0, [FullWord | FilterWs]);
+            _ ->
+               %% 不是特殊词
+               getMatchWords(MatchWordCnt - 1, BinStr, ByteIndex - 1, 0, 0, [?RW | FilterWs])
+         end
+   end.
 
 %% 递归处理判断最新的匹配是否包含或者连接了历史匹配的{CurByteIndex, MatchWordCnt, CurWordIndex}
 dealMatchList([], CurByteIndex, MatchWordCnt, CurWordIndex) ->
diff --git a/src/test/acTest.erl b/src/test/acTest.erl
index 72f468f..f5a6782 100644
--- a/src/test/acTest.erl
+++ b/src/test/acTest.erl
@@ -10,9 +10,22 @@ test1() ->
 test2() ->
     acTc:ts(1000000, eAcs, matchSw, [<<"fdsfads拉法叶舰fds淫秽ffdsfdsffdddd"/utf8>>]).
 
+test21() ->
+    acTc:ts(1000000, eAcs, replaceSw, [<<"fdsfads拉法叶舰fds淫秽ffdsfdsffdddd"/utf8>>]).
+
+test22() ->
+    acTc:ts(1000000, eAcs, isHasSw, [<<"fdsfads拉法叶舰fds淫秽ffdsfdsffdddd"/utf8>>]).
+
 test3(Cnt, BinStr) ->
     acTc:ts(Cnt, eAcs, matchSw, [BinStr]).
 
+test31(Cnt, BinStr) ->
+    acTc:ts(Cnt, keyword, filter, [BinStr]).
+
 test4(Cnt, FileName) ->
     {ok, Data} = file:read_file(FileName),
-    test3(Cnt, Data).
\ No newline at end of file
+    test3(Cnt, Data).
+
+test41(Cnt, FileName) ->
+    {ok, Data} = file:read_file(FileName),
+    test31(Cnt, Data).
\ No newline at end of file
diff --git a/src/test/test.txt b/src/test/test.txt
index 9279f5a..edd2128 100644
--- a/src/test/test.txt
+++ b/src/test/test.txt
@@ -3,7 +3,3 @@ sssa
 ssafds
 sg
 afd
-
-
-
-