Index: ssts-web/src/main/webapp/disinfectsystem/print/print.js
===================================================================
diff -u -r33667 -r34121
--- ssts-web/src/main/webapp/disinfectsystem/print/print.js	(.../print.js)	(revision 33667)
+++ ssts-web/src/main/webapp/disinfectsystem/print/print.js	(.../print.js)	(revision 34121)
@@ -4880,8 +4880,10 @@
 			var position = configObj.headerFooter[0].position;
 			var headHtml = "<p style='font-size:" + fontSize + "px;text-align: center;'><b>" + label + "</b></p>";
 			LODOP.ADD_PRINT_HTM(position[0], position[1], position[2], position[3], headHtml);
-			var headHtml1 = "<p style='font-size:16px;text-align: center;'>" + printObj.startDate + " - " + printObj.endDate + "</p>";
-			LODOP.ADD_PRINT_HTM(50, 20, "95%", 50, headHtml1);
+			if(printObj.startDate && printObj.endDate){
+				var headHtml1 = "<p style='font-size:16px;text-align: center;'>" + printObj.startDate + " - " + printObj.endDate + "</p>";
+				LODOP.ADD_PRINT_HTM(50, 20, "95%", 50, headHtml1);
+			}
 		}
 		if (!isObjEmpty(configObj.goodsTable)) {
 			var tableHtml = "<table border='1' cellspacing=0 cellpadding=0 style='border-collapse:collapse;font-size:16px;margin:0px auto;width:100%' bordercolor='#000000'>";