diff --git a/MdePkg/Library/BaseLib/LoongArch64/AsmCsr.S b/MdePkg/Library/BaseLib/LoongArch64/AsmCsr.S
index 3a879411f5..eb82724503 100644
--- a/MdePkg/Library/BaseLib/LoongArch64/AsmCsr.S
+++ b/MdePkg/Library/BaseLib/LoongArch64/AsmCsr.S
@@ -100,8 +100,7 @@ DirMapCsrRd:
   jirl     $zero, $t0, 0
 
 ReadSelNumErr:
-  addi.d   $a0, $zero, -1
-  jirl     $zero, $ra, 0
+  break    0
 
 BasicCsrRead:
   CsrSel = LOONGARCH_CSR_CRMD
@@ -230,8 +229,7 @@ DirMapCsrWr:
   jirl     $zero, $t0, 0
 
 WriteSelNumErr:
-  addi.d   $a0, $zero, -1
-  jirl     $zero, $ra, 0
+  break    0
 
 BasicCsrWrite:
   CsrSel = LOONGARCH_CSR_CRMD
@@ -368,8 +366,7 @@ DirMapCsrXchg:
   jirl     $zero, $t0, 0
 
 XchgSelNumErr:
-  addi.d   $a0, $zero, -1
-  jirl     $zero, $ra, 0
+  break    0
 
 BasicCsrXchange:
   CsrSel = LOONGARCH_CSR_CRMD
diff --git a/MdePkg/Library/BaseLib/LoongArch64/Csr.c b/MdePkg/Library/BaseLib/LoongArch64/Csr.c
index f2ec80b38d..5a40bfede5 100644
--- a/MdePkg/Library/BaseLib/LoongArch64/Csr.c
+++ b/MdePkg/Library/BaseLib/LoongArch64/Csr.c
@@ -29,7 +29,8 @@ AsmCsrXChg (
 
   @param[in]  Select   CSR read instruction select values.
 
-  @return     The return value of csrrd instruction, return -1 means Select is out of support.
+  @return     The return value of csrrd instruction,
+              if a break exception is triggered, the Select is out of support.
 **/
 UINTN
 EFIAPI
@@ -47,7 +48,7 @@ CsrRead (
   @param[in, out]  Value   The csrwr will write the value.
 
   @return     The return value of csrwr instruction, that is, store the old value of
-              the register, return -1 means Select is out of support.
+              the register, if a break exception is triggered, the Select is out of support.
 **/
 UINTN
 EFIAPI
@@ -67,7 +68,7 @@ CsrWrite (
   @param[in]       Mask     The csrxchg mask value.
 
   @return     The return value of csrxchg instruction, that is, store the old value of
-              the register, return -1 means Select is out of support.
+              the register, if a break exception is triggered, the Select is out of support.
 **/
 UINTN
 EFIAPI