diff --git a/src/libime/pinyin/shuangpindata.h b/src/libime/pinyin/shuangpindata.h
index e2ae177..e6ab170 100644
--- a/src/libime/pinyin/shuangpindata.h
+++ b/src/libime/pinyin/shuangpindata.h
@@ -95,4 +95,26 @@ static const SP_C SPMap_C_XIAOHE[] = {
 static const SP_S SPMap_S_XIAOHE[] = {
     {"ch", 'i'}, {"sh", 'u'}, {"zh", 'v'}, {"\0", '\0'}};
 
+static const SP_C SPMap_C_GB[] = {
+    {.strQP = "ai", .cJP = 'k'},   {.strQP = "an", .cJP = 'f'},
+    {.strQP = "ang", .cJP = 'g'},  {.strQP = "ao", .cJP = 'c'},
+    {.strQP = "ei", .cJP = 'b'},   {.strQP = "en", .cJP = 'r'},
+    {.strQP = "eng", .cJP = 'h'},  {.strQP = "er", .cJP = 'l'},
+    {.strQP = "ia", .cJP = 'q'},   {.strQP = "ian", .cJP = 'd'},
+    {.strQP = "iang", .cJP = 'n'}, {.strQP = "iao", .cJP = 'm'},
+    {.strQP = "ie", .cJP = 't'},   {.strQP = "in", .cJP = 'l'},
+    {.strQP = "ing", .cJP = 'j'},  {.strQP = "iong", .cJP = 's'},
+    {.strQP = "iu", .cJP = 'y'},   {.strQP = "ong", .cJP = 's'},
+    {.strQP = "ou", .cJP = 'p'},   {.strQP = "ua", .cJP = 'q'},
+    {.strQP = "uai", .cJP = 'y'},  {.strQP = "uan", .cJP = 'w'},
+    {.strQP = "uang", .cJP = 'n'}, {.strQP = "ue", .cJP = 'x'},
+    {.strQP = "ui", .cJP = 'v'},   {.strQP = "un", .cJP = 'z'},
+    {.strQP = "uo", .cJP = 'o'},   {.strQP = "ve", .cJP = 'x'},
+    {.strQP = "v", .cJP = 'v'},    {.strQP = "\0", .cJP = '\0'}};
+
+static const SP_S SPMap_S_GB[] = {{.strQP = "ch", .cJP = 'i'},
+                                  {.strQP = "sh", .cJP = 'u'},
+                                  {.strQP = "zh", .cJP = 'v'},
+                                  {.strQP = "\0", .cJP = '\0'}};
+
 #endif
diff --git a/src/libime/pinyin/shuangpinprofile.cpp b/src/libime/pinyin/shuangpinprofile.cpp
index e35042b..31228f6 100644
--- a/src/libime/pinyin/shuangpinprofile.cpp
+++ b/src/libime/pinyin/shuangpinprofile.cpp
@@ -398,6 +398,11 @@ ShuangpinProfile::ShuangpinProfile(
         c = SPMap_C_XIAOHE;
         s = SPMap_S_XIAOHE;
         break;
+    case ShuangpinBuiltinProfile::GB:
+        d->zeroS_ = "a";
+        c = SPMap_C_GB;
+        s = SPMap_S_GB;
+        break;
     default:
         throw std::invalid_argument("Invalid profile");
     }
diff --git a/src/libime/pinyin/shuangpinprofile.h b/src/libime/pinyin/shuangpinprofile.h
index 9269d6b..73e4c3d 100644
--- a/src/libime/pinyin/shuangpinprofile.h
+++ b/src/libime/pinyin/shuangpinprofile.h
@@ -26,6 +26,7 @@ enum class ShuangpinBuiltinProfile {
     Zhongwenzhixing,
     PinyinJiajia,
     Xiaohe,
+    GB,
 };
 
 class ShuangpinProfilePrivate;