diff --git a/WebContent/jsp/onl/kjb/statistics/apiUseStatsMan.jsp b/WebContent/jsp/onl/kjb/statistics/apiUseStatsMan.jsp
index 59acf9c..7f90184 100644
--- a/WebContent/jsp/onl/kjb/statistics/apiUseStatsMan.jsp
+++ b/WebContent/jsp/onl/kjb/statistics/apiUseStatsMan.jsp
@@ -19,6 +19,14 @@
 		#gbox_grid .ui-jqgrid-ftable tr.footrow td {
 			height: 26px;
 		}
+		.cssbtn.small {
+		    height: 24px;
+		    border-radius: 2px;
+		    min-width: 24px;
+		    box-shadow: none;
+		    border-color: #ebebec;
+		    font-size: 11px;
+		}
 	</style>
 	<script language="javascript">
 		var url = '<c:url value="/onl/kjb/statistics/apiUseStatsMan.json"/>';
@@ -90,6 +98,28 @@
 			}
 		}
 
+		// 조회기간을 시작일 기준 이전/다음 달의 1일~말일로 변경 후 조회 (direction: -1 이전달, 1 다음달)
+		function shiftMonthRange(direction) {
+			var v = $("input[name=searchStartDate]").val().replace(/-/g, "");
+			if (!v || v.length < 6) return;
+
+			var year = parseInt(v.substring(0, 4));
+			var month = parseInt(v.substring(4, 6)) - 1; // 0-based
+
+			var first = new Date(year, month + direction, 1);
+			var last = new Date(year, month + direction + 1, 0); // 해당 달의 말일
+
+			function pad(n) { return String(n).padStart(2, '0'); }
+			function fmt(d) {
+				return d.getFullYear() + '' + pad(d.getMonth() + 1) + pad(d.getDate());
+			}
+
+			$("input[name=searchStartDate]").val(fmt(first));
+			$("input[name=searchEndDate]").val(fmt(last));
+
+			search();
+		}
+
 		function exportToExcel() {
 			
 			var postData = getPostData("cmd", "EXCEL_EXPORT");
@@ -278,6 +308,14 @@
 				search();
 			});
 
+			$("#btnPrevMonth").click(function() {
+				shiftMonthRange(-1);
+			});
+
+			$("#btnNextMonth").click(function() {
+				shiftMonthRange(1);
+			});
+
 			$("input[name=searchType]").click(function() {
 				search();
 			});
@@ -320,6 +358,8 @@
 						<input type="text" name="searchStartDate" id="searchStartDate" value="${param.searchStartDate}" style="width:100px;">
 						~
 						<input type="text" name="searchEndDate" id="searchEndDate" value="${param.searchEndDate}" style="width:100px;">
+						<button type="button" id="btnPrevMonth" class="cssbtn small">&lt;</button>
+						<button type="button" id="btnNextMonth" class="cssbtn small">&gt;</button>
 						<span style="color:#888; font-size:12px; margin-left:10px;">(최대 31일)</span>
 					</td>
 				</tr>