diff --git a/TODO.md b/TODO.md
index d049e4a..0640fe7 100644
--- a/TODO.md
+++ b/TODO.md
@@ -12,6 +12,6 @@
   - [x] DBManager
   - [ ] GuildManager
   - [ ] ItemAwardManager
-  - [ ] ItemIDRangeManager
+  - [x] ItemIDRangeManager
   - [x] Marriage
   - [x] Monarch
diff --git a/src/db/src/ItemIDRangeManager.cpp b/src/db/src/ItemIDRangeManager.cpp
index 8e05f2d..8a688b2 100644
--- a/src/db/src/ItemIDRangeManager.cpp
+++ b/src/db/src/ItemIDRangeManager.cpp
@@ -84,72 +84,58 @@ TItemIDRangeTable CItemIDRangeManager::GetRange()
 
 	return ret;
 }
+#include <pqxx/pqxx>
+#include <spdlog/spdlog.h>
 
 bool CItemIDRangeManager::BuildRange(DWORD dwMin, DWORD dwMax, TItemIDRangeTable &range)
 {
-	char szQuery[1024];
 	DWORD dwItemMaxID = 0;
-	SQLMsg *pMsg = NULL;
-	MYSQL_ROW row;
 
-	snprintf(szQuery, sizeof(szQuery), "SELECT MAX(id) FROM item%s WHERE id >= %u and id <= %u", GetTablePostfix(), dwMin, dwMax);
+	auto pool = CDBManager::instance().GetConnectionPool();
+	auto conn = pool->acquire();
 
-	pMsg = CDBManager::instance().DirectQuery(szQuery);
-
-	if (pMsg != NULL)
+	try
 	{
-		if (pMsg->Get()->uiNumRows > 0)
+		pqxx::work txn(*conn);
+
+		auto maxRow = txn.exec_params1("SELECT MAX(id) FROM item WHERE id >= $1 AND id <= $2", dwMin, dwMax);
+
+		if (!maxRow[0].is_null())
+			dwItemMaxID = maxRow[0].as<DWORD>();
+
+		dwItemMaxID = (dwItemMaxID == 0) ? dwMin : dwItemMaxID + 1;
+
+		if ((dwMax < dwItemMaxID) || (dwMax - dwItemMaxID < cs_dwMinimumRemainCount))
 		{
-			row = mysql_fetch_row(pMsg->Get()->pSQLResult);
-			str_to_number(dwItemMaxID, row[0]);
+			SPDLOG_DEBUG("ItemIDRange: Build {} ~ {} start: {}\tNOT USE remain count is below {}",
+						 dwMin, dwMax, dwItemMaxID, cs_dwMinimumRemainCount);
 		}
-		delete pMsg;
-	}
-
-	if (dwItemMaxID == 0)
-		dwItemMaxID = dwMin;
-	else
-		dwItemMaxID++;
-
-	if ((dwMax < dwItemMaxID) || (dwMax - dwItemMaxID < cs_dwMinimumRemainCount))
-	{
-		SPDLOG_DEBUG("ItemIDRange: Build {} ~ {} start: {}\tNOT USE remain count is below {}",
-					 dwMin, dwMax, dwItemMaxID, cs_dwMinimumRemainCount);
-	}
-	else
-	{
-		range.dwMin = dwMin;
-		range.dwMax = dwMax;
-		range.dwUsableItemIDMin = dwItemMaxID;
-
-		snprintf(szQuery, sizeof(szQuery), "SELECT COUNT(*) FROM item%s WHERE id >= %u AND id <= %u",
-				 GetTablePostfix(), range.dwUsableItemIDMin, range.dwMax);
-
-		pMsg = CDBManager::instance().DirectQuery(szQuery);
-
-		if (pMsg != NULL)
+		else
 		{
-			if (pMsg->Get()->uiNumRows > 0)
+			range.dwMin = dwMin;
+			range.dwMax = dwMax;
+			range.dwUsableItemIDMin = dwItemMaxID;
+
+			auto countRow = txn.exec_params1("SELECT COUNT(*) FROM item WHERE id >= $1 AND id <= $2", range.dwUsableItemIDMin, range.dwMax);
+
+			DWORD count = countRow[0].as<DWORD>();
+
+			if (count > 0)
 			{
-				DWORD count = 0;
-				row = mysql_fetch_row(pMsg->Get()->pSQLResult);
-				str_to_number(count, row[0]);
-
-				if (count > 0)
-				{
-					SPDLOG_ERROR("ItemIDRange: Build: {} ~ {}\thave a item", range.dwUsableItemIDMin, range.dwMax);
-					return false;
-				}
-				else
-				{
-					SPDLOG_TRACE("ItemIDRange: Build: {} ~ {} start:{}", range.dwMin, range.dwMax, range.dwUsableItemIDMin);
-					return true;
-				}
+				SPDLOG_ERROR("ItemIDRange: Build: {} ~ {}\thave a item", range.dwUsableItemIDMin, range.dwMax);
+				return false;
+			}
+			else
+			{
+				SPDLOG_TRACE("ItemIDRange: Build: {} ~ {} start:{}", range.dwMin, range.dwMax, range.dwUsableItemIDMin);
+				return true;
 			}
-
-			delete pMsg;
 		}
 	}
+	catch (const std::exception &e)
+	{
+		SPDLOG_ERROR("ItemIDRange: DB error: {}", e.what());
+	}
 
 	return false;
 }