diff --git a/be/src/util/jvm_metrics.cpp b/be/src/util/jvm_metrics.cpp
index acb61c65fc1596..006994115e3b8e 100644
--- a/be/src/util/jvm_metrics.cpp
+++ b/be/src/util/jvm_metrics.cpp
@@ -106,8 +106,9 @@ void JVMMetrics::install(MetricRegistry* registry) {
         return;
     }
 
-#define REGISTER_JVM_METRIC(name, type) \
-    registry->register_metric("jvm_" #name "_size_bytes{type=\"" #type "\"}", &jvm_##name##_##type##_bytes)
+#define REGISTER_JVM_METRIC(name, type)                                                      \
+    registry->register_metric("jvm_" #name "_size_bytes", MetricLabels().add("type", #type), \
+                              &jvm_##name##_##type##_bytes)
 
     REGISTER_JVM_METRIC(heap, used);
     REGISTER_JVM_METRIC(heap, committed);
diff --git a/be/test/util/jvm_metrics_test.cpp b/be/test/util/jvm_metrics_test.cpp
index f2d3a52f7ba959..e2018ba8defcbb 100644
--- a/be/test/util/jvm_metrics_test.cpp
+++ b/be/test/util/jvm_metrics_test.cpp
@@ -36,31 +36,40 @@ TEST_F(JVMMetricsTest, normal) {
     ASSERT_TRUE(st.ok());
     jvm_metrics.install(&registry);
 
-    ASSERT_NE(nullptr, registry.get_metric("jvm_heap_size_bytes{type=\"used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_heap_size_bytes{type=\"committed\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_heap_size_bytes{type=\"max\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_non_heap_size_bytes{type=\"used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_non_heap_size_bytes{type=\"committed\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes{type=\"used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes{type=\"committed\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes{type=\"max\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes{type=\"peak_used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes{type=\"peak_max\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes{type=\"used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes{type=\"committed\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes{type=\"max\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes{type=\"peak_used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes{type=\"peak_max\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes{type=\"used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes{type=\"committed\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes{type=\"max\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes{type=\"peak_used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes{type=\"peak_max\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes{type=\"used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes{type=\"committed\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes{type=\"max\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes{type=\"peak_used\"}"));
-    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes{type=\"peak_max\"}"));
+    // Each JVM gauge is registered under a bare metric name plus a `type` label, so that the
+    // Prometheus exposition emits one valid `# TYPE <name>` line per name (see issue #75159).
+    auto type_label = [](const std::string& type) { return MetricLabels().add("type", type); };
+
+    ASSERT_NE(nullptr, registry.get_metric("jvm_heap_size_bytes", type_label("used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_heap_size_bytes", type_label("committed")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_heap_size_bytes", type_label("max")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_non_heap_size_bytes", type_label("used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_non_heap_size_bytes", type_label("committed")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes", type_label("used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes", type_label("committed")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes", type_label("max")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes", type_label("peak_used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_young_size_bytes", type_label("peak_max")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes", type_label("used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes", type_label("committed")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes", type_label("max")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes", type_label("peak_used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_old_size_bytes", type_label("peak_max")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes", type_label("used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes", type_label("committed")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes", type_label("max")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes", type_label("peak_used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_survivor_size_bytes", type_label("peak_max")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes", type_label("used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes", type_label("committed")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes", type_label("max")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes", type_label("peak_used")));
+    ASSERT_NE(nullptr, registry.get_metric("jvm_perm_size_bytes", type_label("peak_max")));
+
+    // Regression guard for #75159: the label must NOT be baked into the metric name. If it were,
+    // the `# TYPE` line would contain `{...}` and break the entire Prometheus scrape.
+    ASSERT_EQ(nullptr, registry.get_metric("jvm_heap_size_bytes{type=\"used\"}"));
+    ASSERT_EQ(nullptr, registry.get_metric("jvm_perm_size_bytes{type=\"peak_max\"}"));
 
     registry.trigger_hook();