diff --git a/core/src/services/azblob/core.rs b/core/src/services/azblob/core.rs
index 37ba515457c7..ffd76a4a8464 100644
--- a/core/src/services/azblob/core.rs
+++ b/core/src/services/azblob/core.rs
@@ -16,6 +16,7 @@
 // under the License.
 
 use bytes::Bytes;
+use http::header::HeaderName;
 use http::header::CONTENT_LENGTH;
 use http::header::CONTENT_TYPE;
 use http::header::IF_MATCH;
@@ -23,7 +24,6 @@ use http::header::IF_NONE_MATCH;
 use http::HeaderValue;
 use http::Request;
 use http::Response;
-use http::{header::HeaderName, StatusCode};
 use reqsign::AzureStorageCredential;
 use reqsign::AzureStorageLoader;
 use reqsign::AzureStorageSigner;
@@ -39,8 +39,6 @@ use uuid::Uuid;
 use crate::raw::*;
 use crate::*;
 
-use super::error::parse_error;
-
 mod constants {
     pub const X_MS_VERSION: &str = "x-ms-version";
 
@@ -381,6 +379,7 @@ impl AzblobCore {
         args: &OpWrite,
         body: AsyncBody,
     ) -> Result<Request<AsyncBody>> {
+        // refer to https://learn.microsoft.com/en-us/rest/api/storageservices/put-block-list?
         let p = build_abs_path(&self.root, path);
 
         let url = format!(
@@ -439,16 +438,16 @@ impl AzblobCore {
         let req = self.insert_sse_headers(req);
 
         // Set body
-        let mut req_body = "".to_string();
-        req_body.push_str("<BlockList>\n");
+        let req_body = {
+            let block_list = block_ids
+                .iter()
+                .map(|block_id| format!("  <Uncommitted>{}</Uncommitted>", block_id))
+                .collect::<Vec<String>>()
+                .join("\n");
 
-        for block_id in block_ids {
-            req_body.push_str("<Uncommitted>");
-            req_body.push_str(&block_id.to_string());
-            req_body.push_str("</Uncommitted>\n");
-        }
+            format!("<BlockList>\n{}\n</BlockList>", block_list)
+        };
 
-        req_body.push_str("</BlockList>");
         let body = AsyncBody::Bytes(Bytes::from(req_body.to_string()));
         let req = req.body(body).map_err(new_request_build_error)?;
         Ok(req)
diff --git a/core/src/services/azblob/writer.rs b/core/src/services/azblob/writer.rs
index fca2cf458bf8..fceba0f1e5d2 100644
--- a/core/src/services/azblob/writer.rs
+++ b/core/src/services/azblob/writer.rs
@@ -43,34 +43,6 @@ impl AzblobWriter {
     }
 }
 
-#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
-#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
-impl oio::OneShotWrite for AzblobWriter {
-    async fn write_once(&self, bs: &dyn oio::WriteBuf) -> Result<()> {
-        let bs = oio::ChunkedBytes::from_vec(bs.vectored_bytes(bs.remaining()));
-        let mut req = self.core.azblob_put_blob_request(
-            &self.path,
-            Some(bs.len() as u64),
-            &self.op,
-            AsyncBody::ChunkedBytes(bs),
-        )?;
-
-        self.core.sign(&mut req).await?;
-
-        let resp = self.core.send(req).await?;
-
-        let status = resp.status();
-
-        match status {
-            StatusCode::CREATED | StatusCode::OK => {
-                resp.into_body().consume().await?;
-                Ok(())
-            }
-            _ => Err(parse_error(resp).await?),
-        }
-    }
-}
-
 #[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 #[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
 impl oio::AppendWrite for AzblobWriter {