diff --git a/doc/zh/metric.md b/doc/zh/metric.md
index b23dc661d..351c0b054 100644
--- a/doc/zh/metric.md
+++ b/doc/zh/metric.md
@@ -189,7 +189,7 @@ interface HistogramInterface
 {
     public function with(string ...$labelValues): self;
 
-    public function put(float $delta);
+    public function put(float $sample);
 }
 ```
 
diff --git a/src/metric/src/Adapter/Prometheus/Histogram.php b/src/metric/src/Adapter/Prometheus/Histogram.php
index 0950f515b..749ec1d4f 100644
--- a/src/metric/src/Adapter/Prometheus/Histogram.php
+++ b/src/metric/src/Adapter/Prometheus/Histogram.php
@@ -44,8 +44,8 @@ class Histogram implements HistogramInterface
         return $this;
     }
 
-    public function put(float $value): void
+    public function put(float $sample): void
     {
-        $this->histogram->observe($value, $this->labelValues);
+        $this->histogram->observe($sample, $this->labelValues);
     }
 }
diff --git a/src/metric/src/Adapter/RemoteProxy/Histogram.php b/src/metric/src/Adapter/RemoteProxy/Histogram.php
index 52dd85beb..5a42d1d5e 100644
--- a/src/metric/src/Adapter/RemoteProxy/Histogram.php
+++ b/src/metric/src/Adapter/RemoteProxy/Histogram.php
@@ -40,7 +40,7 @@ class Histogram implements HistogramInterface
     /**
      * @var float
      */
-    public $value;
+    public $sample;
 
     public function __construct(string $name, array $labelNames)
     {
@@ -54,9 +54,9 @@ class Histogram implements HistogramInterface
         return $this;
     }
 
-    public function put(float $value): void
+    public function put(float $sample): void
     {
-        $this->value = $value;
+        $this->sample = $sample;
         $process = ProcessCollector::get(static::TARGET_PROCESS_NAME)[0];
         $process->write(serialize($this));
     }
diff --git a/src/metric/src/Adapter/StatsD/Histogram.php b/src/metric/src/Adapter/StatsD/Histogram.php
index 279483495..ec1b75205 100644
--- a/src/metric/src/Adapter/StatsD/Histogram.php
+++ b/src/metric/src/Adapter/StatsD/Histogram.php
@@ -56,8 +56,8 @@ class Histogram implements HistogramInterface
         return $this;
     }
 
-    public function put(float $delta): void
+    public function put(float $sample): void
     {
-        $this->client->timing($this->name, $delta, $this->sampleRate, array_combine($this->labelNames, $this->labelValues));
+        $this->client->timing($this->name, $sample, $this->sampleRate, array_combine($this->labelNames, $this->labelValues));
     }
 }
diff --git a/src/metric/src/Contract/HistogramInterface.php b/src/metric/src/Contract/HistogramInterface.php
index ce2aeb1c8..5c36aa61b 100644
--- a/src/metric/src/Contract/HistogramInterface.php
+++ b/src/metric/src/Contract/HistogramInterface.php
@@ -22,5 +22,5 @@ interface HistogramInterface
 {
     public function with(string ...$labelValues): self;
 
-    public function put(float $delta): void;
+    public function put(float $sample): void;
 }
diff --git a/src/metric/src/Listener/OnPipeMessage.php b/src/metric/src/Listener/OnPipeMessage.php
index 01b588ca7..ed25b7621 100644
--- a/src/metric/src/Listener/OnPipeMessage.php
+++ b/src/metric/src/Listener/OnPipeMessage.php
@@ -63,7 +63,7 @@ class OnPipeMessage implements ListenerInterface
                     break;
                 case $inner instanceof Histogram:
                     $histogram = $this->factory->makeHistogram($inner->name, $inner->labelNames);
-                    $histogram->with(...$inner->labelValues)->put($inner->value);
+                    $histogram->with(...$inner->labelValues)->put($inner->sample);
                     break;
                 default:
                     // Nothing to do