diff --git a/gmtsph-profile.sh b/gmtsph-profile.sh
index 46a3ce7..147dc16 100755
--- a/gmtsph-profile.sh
+++ b/gmtsph-profile.sh
@@ -69,7 +69,7 @@ else
 	# 设置绘图参数
 	gmt gmtset \
 	COLOR_NAN=grey \
-	FONT_ANNOT_PRIMARY=7p,Times-Roman,black \
+	FONT_ANNOT_PRIMARY=10.5p,Times-Roman,black \
 	MAP_FRAME_PEN=thin,black \
 	MAP_TICK_LENGTH_PRIMARY=2p/1p \
 	MAP_TITLE_OFFSET=7p \