diff --git a/System-Metrics.md b/System-Metrics.md
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+++ b/System-Metrics.md
@@ -1,5 +1,7 @@
 SeaweedFS uses [Prometheus](https://prometheus.io/) to store the metrics and [Grafana](https://grafana.com/grafana) to visualize them. 
 
+SeaweedFS supports both push and pull metrics.
+
 # Push Metrics
 SeaweedFS can publish metrics to [Prometheus Push Gateway](https://github.com/prometheus/pushgateway), and the gateway pass along to the Prometheus server.