diff --git a/src/frontend/src/instance.rs b/src/frontend/src/instance.rs
index a9cfc31cad..6c68a62dfc 100644
--- a/src/frontend/src/instance.rs
+++ b/src/frontend/src/instance.rs
@@ -580,6 +580,7 @@ impl PrometheusHandler for Instance {
         query: &PromQuery,
         query_ctx: QueryContextRef,
     ) -> server_error::Result<Output> {
+        let _timer = timer!(metrics::METRIC_HANDLE_PROMQL_ELAPSED);
         let interceptor = self
             .plugins
             .get::<PromQueryInterceptorRef<server_error::Error>>();
diff --git a/src/frontend/src/metrics.rs b/src/frontend/src/metrics.rs
index 31c5de4a64..cbfcab962c 100644
--- a/src/frontend/src/metrics.rs
+++ b/src/frontend/src/metrics.rs
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 pub(crate) const METRIC_HANDLE_SQL_ELAPSED: &str = "frontend.handle_sql_elapsed";
+pub(crate) const METRIC_HANDLE_PROMQL_ELAPSED: &str = "frontend.handle_promql_elapsed";
 pub(crate) const METRIC_EXEC_PLAN_ELAPSED: &str = "frontend.exec_plan_elapsed";
 pub(crate) const METRIC_HANDLE_SCRIPTS_ELAPSED: &str = "frontend.handle_scripts_elapsed";
 pub(crate) const METRIC_RUN_SCRIPT_ELAPSED: &str = "frontend.run_script_elapsed";
diff --git a/src/servers/src/metrics.rs b/src/servers/src/metrics.rs
index cbeaaa9ab8..8e206059d8 100644
--- a/src/servers/src/metrics.rs
+++ b/src/servers/src/metrics.rs
@@ -46,6 +46,16 @@ pub(crate) const METRIC_HTTP_PROM_STORE_READ_ELAPSED: &str = "servers.http_prome
 pub(crate) const METRIC_HTTP_OPENTELEMETRY_ELAPSED: &str = "servers.http_otlp_elapsed";
 pub(crate) const METRIC_TCP_OPENTSDB_LINE_WRITE_ELAPSED: &str =
     "servers.opentsdb_line_write_elapsed";
+pub(crate) const METRIC_HTTP_PROMQL_INSTANT_QUERY_ELAPSED: &str =
+    "servers.http_promql_instant_query_elapsed";
+pub(crate) const METRIC_HTTP_PROMQL_RANGE_QUERY_ELAPSED: &str =
+    "servers.http_promql_range_query_elapsed";
+pub(crate) const METRIC_HTTP_PROMQL_LABEL_QUERY_ELAPSED: &str =
+    "servers.http_promql_label_query_elapsed";
+pub(crate) const METRIC_HTTP_PROMQL_SERIES_QUERY_ELAPSED: &str =
+    "servers.http_promql_series_query_elapsed";
+pub(crate) const METRIC_HTTP_PROMQL_LABEL_VALUE_QUERY_ELAPSED: &str =
+    "servers.http_promql_label_value_query_elapsed";
 
 pub(crate) const METRIC_MYSQL_CONNECTIONS: &str = "servers.mysql_connection_count";
 pub(crate) const METRIC_MYSQL_QUERY_TIMER: &str = "servers.mysql_query_elapsed";
diff --git a/src/servers/src/prometheus.rs b/src/servers/src/prometheus.rs
index 293a702a96..9c65a243ca 100644
--- a/src/servers/src/prometheus.rs
+++ b/src/servers/src/prometheus.rs
@@ -26,7 +26,7 @@ use common_error::ext::ErrorExt;
 use common_error::status_code::StatusCode;
 use common_query::Output;
 use common_recordbatch::RecordBatches;
-use common_telemetry::info;
+use common_telemetry::{info, timer};
 use common_time::util::{current_time_rfc3339, yesterday_rfc3339};
 use datatypes::prelude::ConcreteDataType;
 use datatypes::scalars::ScalarVector;
@@ -91,7 +91,7 @@ impl PrometheusServer {
     }
 
     pub fn make_app(&self) -> Router {
-        // TODO(ruihang): implement format_query, series, values, query_examplars and targets methods
+        // TODO(ruihang): implement format_query, series, values, query_exemplars and targets methods
 
         let router = Router::new()
             .route("/query", routing::post(instant_query).get(instant_query))
@@ -428,6 +428,7 @@ pub async fn instant_query(
     Query(params): Query<InstantQuery>,
     Form(form_params): Form<InstantQuery>,
 ) -> Json<PrometheusJsonResponse> {
+    let _timer = timer!(crate::metrics::METRIC_HTTP_PROMQL_INSTANT_QUERY_ELAPSED);
     // Extract time from query string, or use current server time if not specified.
     let time = params
         .time
@@ -471,6 +472,7 @@ pub async fn range_query(
     Query(params): Query<RangeQuery>,
     Form(form_params): Form<RangeQuery>,
 ) -> Json<PrometheusJsonResponse> {
+    let _timer = timer!(crate::metrics::METRIC_HTTP_PROMQL_RANGE_QUERY_ELAPSED);
     let prom_query = PromQuery {
         query: params.query.or(form_params.query).unwrap_or_default(),
         start: params.start.or(form_params.start).unwrap_or_default(),
@@ -543,6 +545,7 @@ pub async fn labels_query(
     Query(params): Query<LabelsQuery>,
     Form(form_params): Form<LabelsQuery>,
 ) -> Json<PrometheusJsonResponse> {
+    let _timer = timer!(crate::metrics::METRIC_HTTP_PROMQL_LABEL_QUERY_ELAPSED);
     let mut queries = params.matches.0;
     if queries.is_empty() {
         queries = form_params.matches.0;
@@ -779,6 +782,7 @@ pub async fn label_values_query(
     Path(label_name): Path<String>,
     Query(params): Query<LabelValueQuery>,
 ) -> Json<PrometheusJsonResponse> {
+    let _timer = timer!(crate::metrics::METRIC_HTTP_PROMQL_LABEL_VALUE_QUERY_ELAPSED);
     let queries = params.matches.0;
     if queries.is_empty() {
         return PrometheusJsonResponse::error("Invalid argument", "match[] parameter is required");
@@ -891,6 +895,7 @@ pub async fn series_query(
     Query(params): Query<SeriesQuery>,
     Form(form_params): Form<SeriesQuery>,
 ) -> Json<PrometheusJsonResponse> {
+    let _timer = timer!(crate::metrics::METRIC_HTTP_PROMQL_SERIES_QUERY_ELAPSED);
     let mut queries: Vec<String> = params.matches.0;
     if queries.is_empty() {
         queries = form_params.matches.0;