diff --git a/UefiCpuPkg/Library/CpuExceptionHandlerLib/LoongArch/LoongArch64/ArchExceptionHandler.c b/UefiCpuPkg/Library/CpuExceptionHandlerLib/LoongArch/LoongArch64/ArchExceptionHandler.c
index c0219deba5..519fe1e24e 100644
--- a/UefiCpuPkg/Library/CpuExceptionHandlerLib/LoongArch/LoongArch64/ArchExceptionHandler.c
+++ b/UefiCpuPkg/Library/CpuExceptionHandlerLib/LoongArch/LoongArch64/ArchExceptionHandler.c
@@ -260,7 +260,7 @@ IpiInterruptHandler (
     //
     // Set $a0 as APIC ID and $a1 as parameter value.
     //
-    SystemContext.SystemContextLoongArch64->R4 = CsrRead (LOONGARCH_CSR_CPUNUM);
+    SystemContext.SystemContextLoongArch64->R4 = CsrRead (LOONGARCH_CSR_CPUID);
     SystemContext.SystemContextLoongArch64->R5 = Parameter;
   }
 
diff --git a/UefiCpuPkg/Library/MpInitLib/LoongArch64/MpLib.c b/UefiCpuPkg/Library/MpInitLib/LoongArch64/MpLib.c
index 54c23ecf10..ff2c033da6 100644
--- a/UefiCpuPkg/Library/MpInitLib/LoongArch64/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/LoongArch64/MpLib.c
@@ -60,7 +60,7 @@ GetApicId (
 {
   UINTN  CpuNum;
 
-  CpuNum = CsrRead (LOONGARCH_CSR_CPUNUM);
+  CpuNum = CsrRead (LOONGARCH_CSR_CPUID);
 
   return CpuNum & 0x3ff;
 }