diff --git a/src/tsdb/inc/tsdbMain.h b/src/tsdb/inc/tsdbMain.h
index 489d2a4a10..e82bb580ec 100644
--- a/src/tsdb/inc/tsdbMain.h
+++ b/src/tsdb/inc/tsdbMain.h
@@ -26,6 +26,7 @@
 #include "tsdb.h"
 #include "tskiplist.h"
 #include "tutil.h"
+#include "tchecksum.h"
 #include "tfs.h"
 
 #ifdef __cplusplus
@@ -355,9 +356,11 @@ int     tsdbOpenDFile(SDFile* pDFile, int flags);
 void    tsdbCloseDFile(SDFile* pDFile);
 int64_t tsdbSeekDFile(SDFile* pDFile, int64_t offset, int whence);
 int64_t tsdbWriteDFile(SDFile* pDFile, void* buf, int64_t nbyte);
+int64_t tsdbAppendDFile(SDFile* pDFile, void* buf, int64_t nbyte, int64_t* offset);
 int64_t tsdbTellDFile(SDFile* pDFile);
 int     tsdbEncodeDFile(void** buf, SDFile* pDFile);
 void*   tsdbDecodeDFile(void* buf, SDFile* pDFile);
+void    tsdbUpdateDFileMagic(SDFile* pDFile, void* pCksm);
 
 typedef struct {
   int    fid;
diff --git a/src/tsdb/inc/tsdbReadImpl.h b/src/tsdb/inc/tsdbReadImpl.h
index 5b099e27e6..df113f8b93 100644
--- a/src/tsdb/inc/tsdbReadImpl.h
+++ b/src/tsdb/inc/tsdbReadImpl.h
@@ -93,11 +93,12 @@ struct SReadH {
 #define TSDB_READ_REPO(rh) ((rh)->pRepo)
 #define TSDB_READ_REPO_ID(rh) REPO_ID(TSDB_READ_REPO(rh))
 #define TSDB_READ_FSET(rh) &((rh)->rSet)
+#define TSDB_READ_TABLE(ch) ((rh)->pTable)
 #define TSDB_READ_HEAD_FILE(rh) TSDB_DFILE_IN_SET(TSDB_READ_FSET(rh), TSDB_FILE_HEAD)
 #define TSDB_READ_DATA_FILE(rh) TSDB_DFILE_IN_SET(TSDB_READ_FSET(rh), TSDB_FILE_DATA)
 #define TSDB_READ_LAST_FILE(rh) TSDB_DFILE_IN_SET(TSDB_READ_FSET(rh), TSDB_FILE_LAST)
-#define TSDB_READ_BUF(rh) (rh)->pBuf
-#define TSDB_READ_COMP_BUF(rh) (rh)->pCBuf
+#define TSDB_READ_BUF(rh) ((rh)->pBuf)
+#define TSDB_READ_COMP_BUF(rh) ((rh)->pCBuf)
 
 #define TSDB_BLOCK_STATIS_SIZE(ncols) (sizeof(SBlockData) + sizeof(SBlockCol) * (ncols) + sizeof(TSCKSUM))
 
diff --git a/src/tsdb/src/tsdbCommit.c b/src/tsdb/src/tsdbCommit.c
index f6b9bd5a99..114cc2e3fb 100644
--- a/src/tsdb/src/tsdbCommit.c
+++ b/src/tsdb/src/tsdbCommit.c
@@ -38,10 +38,14 @@ typedef struct {
 } SCommitH;
 
 #define TSDB_COMMIT_REPO(ch) TSDB_READ_REPO(&(ch->readh))
+#define TSDB_COMMIT_REPO_ID(ch) REPO_ID(TSDB_READ_REPO(&(ch->readh)))
 #define TSDB_COMMIT_WRITE_FSET(ch) ((ch)->pWSet)
+#define TSDB_COMMIT_TABLE(ch) TSDB_READ_TABLE(&(ch->readh))
 #define TSDB_COMMIT_HEAD_FILE(ch) TSDB_DFILE_IN_SET(TSDB_COMMIT_WRITE_FSET(ch), TSDB_FILE_HEAD)
 #define TSDB_COMMIT_DATA_FILE(ch) TSDB_DFILE_IN_SET(TSDB_COMMIT_WRITE_FSET(ch), TSDB_FILE_DATA)
 #define TSDB_COMMIT_LAST_FILE(ch) TSDB_DFILE_IN_SET(TSDB_COMMIT_WRITE_FSET(ch), TSDB_FILE_LAST)
+#define TSDB_COMMIT_BUF(ch) TSDB_READ_BUF(&(ch->readh))
+#define TSDB_COMMIT_COMP_BUF(ch) TSDB_READ_COMP_BUF(&(ch->readh))
 
 void *tsdbCommitData(STsdbRepo *pRepo) {
   if (tsdbStartCommit(pRepo) < 0) {
@@ -659,7 +663,114 @@ _err:
 static int tsdbWriteBlockInfo(SCommitH *pCommih) {
   SDFile *pHeadf = TSDB_COMMIT_HEAD_FILE(pCommih);
 
-  // TODO
+  SBlockIdx   blkIdx;
+  STable *    pTable = TSDB_COMMIT_TABLE(pCommih);
+  SBlock *    pBlock;
+  size_t      nSupBlocks;
+  size_t      nSubBlocks;
+  uint32_t    tlen;
+  SBlockInfo *pBlkInfo;
+  int64_t     offset;
+
+  nSupBlocks = taosArrayGetSize(pCommih->aSupBlk);
+  nSubBlocks = taosArrayGetSize(pCommih->aSubBlk);
+  tlen = sizeof(SBlockInfo) + sizeof(SBlock) * (nSupBlocks + nSubBlocks) + sizeof(TSCKSUM);
+
+  ASSERT(nSupBlocks > 0);
+
+  // Write SBlockInfo part
+  if (tsdbMakeRoom((void **)(&(TSDB_COMMIT_BUF(pCommih))), tlen) < 0) return -1;
+  pBlkInfo = TSDB_COMMIT_BUF(pCommih);
+
+  pBlkInfo->delimiter = TSDB_FILE_DELIMITER;
+  pBlkInfo->tid = TABLE_TID(pTable);
+  pBlkInfo->uid = TABLE_UID(pTable);
+
+  memcpy((void *)(pBlkInfo->blocks), taosArrayGet(pCommih->aSupBlk, 0), nSupBlocks * sizeof(SBlock));
+  if (nSubBlocks > 0) {
+    memcpy((void *)(pBlkInfo->blocks + nSupBlocks), taosArrayGet(pCommih->aSubBlk, 0), nSubBlocks * sizeof(SBlock));
+
+    for (int i = 0; i < nSupBlocks; i++) {
+      pBlock = pBlkInfo->blocks + i;
+
+      if (pBlock->numOfSubBlocks > 1) {
+        pBlock->offset += (sizeof(SBlockInfo) + sizeof(SBlock) * nSupBlocks);
+      }
+    }
+  }
+
+  taosCalcChecksumAppend(0, (uint8_t *)pBlkInfo, tlen);
+
+  offset = tsdbSeekDFile(pHeadf, 0, SEEK_END);
+  if (offset < 0) {
+    tsdbError("vgId:%d failed to write block info part to file %s while seek since %s", TSDB_COMMIT_REPO_ID(pCommih),
+              TSDB_FILE_FULL_NAME(pHeadf), tstrerror(terrno));
+    return -1;
+  }
+
+  if (tsdbWriteDFile(pHeadf, TSDB_COMMIT_BUF(pCommih), tlen) < tlen) {
+    tsdbError("vgId:%d failed to write block info part to file %s since %s", TSDB_COMMIT_REPO_ID(pCommih),
+              TSDB_FILE_FULL_NAME(pHeadf), tstrerror(terrno));
+    return -1;
+  }
+
+  tsdbUpdateDFileMagic(pHeadf, POINTER_SHIFT(pBlkInfo, tlen - sizeof(TSCKSUM)));
+
+  // Set blkIdx
+  pBlock = taosArrayGet(pCommih->aSupBlk, nSupBlocks - 1);
+
+  blkIdx.tid = TABLE_TID(pTable);
+  blkIdx.uid = TABLE_UID(pTable);
+  blkIdx.hasLast = pBlock->last ? 1 : 0;
+  blkIdx.maxKey = pBlock->keyLast;
+  blkIdx.numOfBlocks = nSupBlocks;
+  blkIdx.len = tlen;
+  blkIdx.offset = (uint32_t)offset;
+
+  ASSERT(blkIdx.numOfBlocks > 0);
+
+  if (taosArrayPush(pCommih->aBlkIdx, (void *)(&blkIdx)) == NULL) {
+    terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
+    return -1;
+  }
+
+  return 0;
+}
+
+static int tsdbWriteBlockIdx(SCommitH *pCommih) {
+  SBlockIdx *pBlkIdx;
+  SDFile *   pHeadf = TSDB_COMMIT_HEAD_FILE(pCommih);
+  size_t     nidx = taosArrayGetSize(pCommih->aBlkIdx);
+  int        tlen = 0, size;
+  int64_t    offset;
+
+  ASSERT(nidx > 0);
+
+  for (size_t i = 0; i < nidx; i++) {
+    pBlkIdx = (SBlockIdx *)taosArrayGet(pCommih->aBlkIdx, i);
+
+    size = tsdbEncodeSBlockIdx(NULL, pBlkIdx);
+    if (tsdbMakeRoom((void **)(&TSDB_COMMIT_BUF(pCommih)), tlen + size) < 0) return -1;
+
+    void *ptr = POINTER_SHIFT(TSDB_COMMIT_BUF(pCommih), tlen);
+    tsdbEncodeSBlockIdx(&ptr, pBlkIdx);
+
+    tlen += size;
+  }
+
+  tlen += sizeof(TSCKSUM);
+  if (tsdbMakeRoom((void **)(&TSDB_COMMIT_BUF(pCommih)), tlen) < 0) return -1;
+  taosCalcChecksumAppend(0, (uint8_t *)TSDB_COMMIT_BUF(pCommih), tlen);
+
+  if (tsdbAppendDFile(pHeadf, TSDB_COMMIT_BUF(pCommih), tlen, &offset) < tlen) {
+    tsdbError("vgId:%d failed to write block index part to file %s since %s", TSDB_COMMIT_REPO_ID(pCommih),
+              TSDB_FILE_FULL_NAME(pHeadf), tstrerror(terrno));
+    return -1;
+  }
+
+  tsdbUpdateDFileMagic(pHeadf, POINTER_SHIFT(TSDB_COMMIT_BUF(pCommih), tlen - sizeof(TSCKSUM)));
+  pHeadf->info.offset = offset;
+  pHeadf->info.len = tlen;
 
   return 0;
 }
\ No newline at end of file
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index c5330852f5..2823a2517e 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -173,6 +173,19 @@ int64_t tsdbWriteDFile(SDFile *pDFile, void *buf, int64_t nbyte) {
     return -1;
   }
 
+  return nwrite;
+}
+
+int64_t tsdbAppendDFile(SDFile *pDFile, void *buf, int64_t nbyte, int64_t *offset) {
+  ASSERT(TSDB_FILE_OPENED(pDFile));
+  int64_t nwrite;
+
+  *offset = tsdbSeekDFile(pDFile, 0, SEEK_SET);
+  if (*offset < 0) return -1;
+
+  nwrite = tsdbWriteDFile(pDFile, buf, nbyte);
+  if (nwrite < 0) return nwrite;
+
   pDFile->info.size += nbyte;
   return nwrite;
 }
@@ -207,6 +220,10 @@ void *tsdbDecodeDFile(void *buf, SDFile *pDFile) {
   return buf;
 }
 
+void tsdbUpdateDFileMagic(SDFile *pDFile, void *pCksm) {
+  pDFile->info.magic = taosCalcChecksum(pDFile->info.magic, (uint8_t *)(pCksm), sizeof(TSCKSUM));
+}
+
 static int tsdbEncodeDFInfo(void **buf, SDFInfo *pInfo) {
   int tlen = 0;