diff --git a/services/ptable_parse/ptable.cpp b/services/ptable_parse/ptable.cpp
index d91e4b2a99127ea5264891a1292e820274569aba..c379f813d4d692e9c738f9c721d7a7fc5c344488 100644
--- a/services/ptable_parse/ptable.cpp
+++ b/services/ptable_parse/ptable.cpp
@@ -48,11 +48,33 @@ bool Ptable::CorrectBufByPtnList(uint8_t *imageBuf, uint64_t imgBufSize, const s
     return false;
 }
 
+std::vector<std::string> Ptable::GetABPartitionList() const
+{
+    return abPartitionList_;
+}
+
 uint32_t Ptable::GetPtablePartitionNum() const
 {
     return partitionInfo_.size();
 }
 
+bool Ptable::LoadABPtnInfo()
+{
+    if (abPartitionList_.empty()) {
+        LOG(ERROR) << "gei partiotion failed! abPartitionList_ is empty";
+        return false;
+    }
+    for ( auto &partition : partitionInfo_) {
+        if (partition.partType == Ptable::PartType::A_TYPE) {
+            std::string partitionName = partition.dispName.substr(
+                0, partition.dispName.size() - Ptable::PARTITION_AB_SUFFIX_SIZE);
+            LOG(INFO) << "get AB partition. name = " << partitionName;
+            abPartitionList_.push_back(partitionName);
+        }
+    }
+    return true;
+}
+
 bool Ptable::LoadPtnInfo(const std::vector<PtnInfo> &ptnInfo)
 {
     if (ptnInfo.empty()) {
diff --git a/services/ptable_parse/ptable.h b/services/ptable_parse/ptable.h
index 7bab2056afe6e629435f0dd0ca544765e02e6932..b54a6881ffce7f49aca801f16cf6f53012e05489 100644
--- a/services/ptable_parse/ptable.h
+++ b/services/ptable_parse/ptable.h
@@ -72,6 +72,7 @@ public:
     uint64_t devDensity;
     };
     std::vector<PtnInfo> GetPtablePartitionInfo() const;
+    std::vector<std::string> GetABPartitionList() const;
     uint32_t GetPtablePartitionNum() const;
     void SetReservedSize(uint64_t reservedSize);
     bool InitPtable();
@@ -81,6 +82,7 @@ public:
     bool GetPartionInfoByName(const std::string &partitionName, PtnInfo &ptnInfo, int32_t &index);
     std::vector<PtnInfo>& GetPtablePartitionInfoInstance();
     bool LoadPtnInfo(const std::vector<PtnInfo>& ptnInfo);
+    bool LoadABPtnInfo();
     bool WritePartitionBufToFile(uint8_t *ptbImgBuffer, const uint32_t imgBufSize);
     bool ReadPartitionFileToBuffer(uint8_t *ptbImgBuffer, uint32_t &imgBufSize);
     void DeletePartitionTmpFile();
@@ -212,6 +214,7 @@ public:
     };
 
     std::vector<PtnInfo> partitionInfo_;
+    std::vector<std::string> abPartitionList_;
     PtableData ptableData_;
     uint64_t reservedSize_ {0};