diff --git a/server-rs/crates/api-server/src/error_reports.rs b/server-rs/crates/api-server/src/error_reports.rs
index b57359e77..48315f849 100644
--- a/server-rs/crates/api-server/src/error_reports.rs
+++ b/server-rs/crates/api-server/src/error_reports.rs
@@ -3,6 +3,7 @@ use crate::{
     api_response::json_success_body,
     auth::{AuthenticatedAccessToken, require_bearer_auth},
     http_error::AppError,
+    platform_errors,
     request_context::RequestContext,
     state::AppState,
     tracking::{TrackingEventDraft, record_tracking_event_after_success},
@@ -273,7 +274,7 @@ pub async fn admin_get_error_report(
         .spacetime_client()
         .get_error_report(batch_id.clone())
         .await
-        .map_err(|_| AppError::from_status(StatusCode::NOT_FOUND).with_message("报告不存在"))?;
+        .map_err(map_error_report_spacetime_error)?;
     let bytes = state
         .oss_client()
         .ok_or_else(|| internal("OSS 未配置"))?
@@ -285,7 +286,7 @@ pub async fn admin_get_error_report(
             },
         )
         .await
-        .map_err(|_| AppError::from_status(StatusCode::NOT_FOUND).with_message("报告附件不存在"))?;
+        .map_err(map_error_report_oss_error)?;
     let (events, desc, logs) =
         parse_archive(&bytes).map_err(|e| internal(format!("报告归档损坏：{e}")))?;
     record_admin_report_audit(
@@ -389,7 +390,7 @@ pub async fn admin_download_error_report(
         .spacetime_client()
         .get_error_report(batch_id.clone())
         .await
-        .map_err(|_| AppError::from_status(StatusCode::NOT_FOUND).with_message("报告不存在"))?;
+        .map_err(map_error_report_spacetime_error)?;
     let bytes = state
         .oss_client()
         .ok_or_else(|| internal("OSS 未配置"))?
@@ -401,7 +402,7 @@ pub async fn admin_download_error_report(
             },
         )
         .await
-        .map_err(|_| AppError::from_status(StatusCode::NOT_FOUND).with_message("报告附件不存在"))?;
+        .map_err(map_error_report_oss_error)?;
     record_admin_report_audit(
         &state,
         &ctx,
@@ -429,6 +430,26 @@ fn bad_request(m: impl Into<String>) -> AppError {
 fn internal<E: ToString>(e: E) -> AppError {
     AppError::from_status(StatusCode::INTERNAL_SERVER_ERROR).with_message(e.to_string())
 }
+
+fn map_error_report_oss_error(error: platform_oss::OssError) -> AppError {
+    match error.kind() {
+        platform_oss::OssErrorKind::ObjectNotFound => {
+            AppError::from_status(StatusCode::NOT_FOUND).with_message("报告附件不存在")
+        }
+        platform_oss::OssErrorKind::InvalidRequest => {
+            AppError::from_status(StatusCode::BAD_REQUEST).with_message("报告附件读取请求无效")
+        }
+        _ => platform_errors::map_oss_error(error, "error-report"),
+    }
+}
+
+fn map_error_report_spacetime_error(error: spacetime_client::SpacetimeClientError) -> AppError {
+    if error.to_string() == "错误报告不存在" {
+        AppError::from_status(StatusCode::NOT_FOUND).with_message("报告不存在")
+    } else {
+        internal(error)
+    }
+}
 async fn record_admin_report_audit(
     state: &AppState,
     ctx: &RequestContext,