diff --git a/gmtsph-regional.sh b/gmtsph-regional.sh
index 9b3976b..2c741e2 100755
--- a/gmtsph-regional.sh
+++ b/gmtsph-regional.sh
@@ -107,7 +107,7 @@ else
 	fi
 	# 设置绘图参数
 	gmt gmtset \
-	FONT_ANNOT_PRIMARY=10p,Times-Roman,black \
+	FONT_ANNOT_PRIMARY=10.5p,Times-Roman,black \
 	MAP_FRAME_PEN=thinnest,black \
 	MAP_FRAME_WIDTH=1p \
 	MAP_TICK_LENGTH_PRIMARY=1.5p/1p \