diff --git a/res/heatmap_script.R b/res/heatmap_script.R
index 5d5368b..32c8af6 100644
--- a/res/heatmap_script.R
+++ b/res/heatmap_script.R
@@ -67,7 +67,7 @@ circos.track(track.index = get.current.track.index(), panel.fun = function(x, y)
     n <- length(cn)
     circos.text(rep(CELL_META$cell.xlim[2], n) + convert_x(0.5, "mm"), 
                 1:n + 2.5, 
-                cn, cex = 0.6, adj = c(0, 0.5), facing = "inside")
+                cn, cex = 1.0, adj = c(0, 0.5), facing = "inside")  # 将 cex 从 0.6 改为 1.0
   }
 }, bg.border = NA)