From b298352a2def23c7326cd1c8d36b4a9d05d4234e Mon Sep 17 00:00:00 2001
From: YueHuaJi <131894762+YueHuaJi@users.noreply.github.com>
Date: Mon, 3 Jul 2023 20:30:33 +0800
Subject: [PATCH 1/2] Update _axes.py

test
---
 lib/matplotlib/axes/_axes.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
index 4eff4ec1b5d2..b056d024f6fa 100644
--- a/lib/matplotlib/axes/_axes.py
+++ b/lib/matplotlib/axes/_axes.py
@@ -4163,7 +4163,13 @@ def bxp(self, bxpstats, positions=None, widths=None, vert=True,
         if zorder is None:
             zorder = mlines.Line2D.zorder
 
-        zdelta = 0.1
+        # Use 'butt' as the default capstyle to avoid a visual overlap of
+        # the median line and the boxplot
+        if medianprops is None or medianprops.get('solid_capstyle', None) is None:
+            medianprops['solid_capstyle'] = 'butt'
+
+        # put the mean and median line below the box for visual improvement
+        zdelta = -0.1
 
         def merge_kw_rc(subkey, explicit, zdelta=0, usemarker=True):
             d = {k.split('.')[-1]: v for k, v in mpl.rcParams.items()

From e8bab94f7991afcac1a0e6fd87bab9bf41e08ef1 Mon Sep 17 00:00:00 2001
From: YueHuaJi <131894762+YueHuaJi@users.noreply.github.com>
Date: Mon, 3 Jul 2023 20:38:24 +0800
Subject: [PATCH 2/2] Update test_axes.py not yet

test2
---
 lib/matplotlib/tests/test_axes.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
index 30c7e34c937b..17b34fb9d1d6 100644
--- a/lib/matplotlib/tests/test_axes.py
+++ b/lib/matplotlib/tests/test_axes.py
@@ -3537,6 +3537,14 @@ def test_boxplot_zorder():
     assert ax.boxplot(x)['boxes'][0].get_zorder() == 2
     assert ax.boxplot(x, zorder=10)['boxes'][0].get_zorder() == 10
 
+@check_figures_equal()
+def test_boxplot_median_bound_by_box(fig_test, fig_ref):
+    data = np.arange(3)
+    medianprops_test = {"linewidth": 12}
+    medianprops_ref = {**medianprops_test, "solid_capstyle": "butt"}
+    fig_test.subplots().boxplot(data,  medianprops=medianprops_test)
+    fig_ref.subplots().boxplot(data, medianprops=medianprops_ref)
+
 
 def test_boxplot_marker_behavior():
     plt.rcParams['lines.marker'] = 's'