diff --git a/interfaces/innerkits/include/hril_types.h b/interfaces/innerkits/include/hril_types.h
index 7e5bb29..334373b 100644
--- a/interfaces/innerkits/include/hril_types.h
+++ b/interfaces/innerkits/include/hril_types.h
@@ -194,6 +194,7 @@ inline constexpr const char *HRIL_VIRTUAL_MODEM_SWITCH = "const.booster.virtual_
 inline constexpr const char *HRIL_VIRTUAL_MODEM_DEFAULT_SWITCH = "false";
 inline constexpr const char *HRIL_DEFAULT_VSIM_MODEM_COUNT = "0";
 inline constexpr const char *HRIL_VSIM_MODEM_COUNT_STR = "const.telephony.vsimModemCount";
+inline constexpr const char *DISTRIBUTE_MODEM_MULTIDEVICE_ENABLE = "persist.distributedmodem.multidevice.enable";
 
 /** Interface token */
 inline const std::u16string HRIL_INTERFACE_TOKEN = u"ohos.telephony.hril";
diff --git a/services/hril/include/hril_manager.h b/services/hril/include/hril_manager.h
index 0365f85..7cb1b9f 100644
--- a/services/hril/include/hril_manager.h
+++ b/services/hril/include/hril_manager.h
@@ -35,6 +35,7 @@ namespace OHOS {
 namespace Telephony {
 inline const int32_t DUAL_SLOT_COUNT = 2;
 inline const int32_t MAX_SLOT_COUNT = 3;
+inline const int32_t DC_MD_MAX_SLOT_COUNT = 8;
 
 typedef enum : int32_t {
     RIL_REGISTER_IS_NONE = 0,
diff --git a/services/hril/src/hril_manager.cpp b/services/hril/src/hril_manager.cpp
index 244988c..12954b0 100644
--- a/services/hril/src/hril_manager.cpp
+++ b/services/hril/src/hril_manager.cpp
@@ -1137,6 +1137,13 @@ int32_t GetSimSlotCount()
         (vSimModemCountNumber == MAX_SLOT_COUNT || vSimModemCountNumber == DUAL_SLOT_COUNT)) {
         simSlotCountNumber = MAX_SLOT_COUNT;
     }
+
+    char multiDeviceEnable[HRIL_SYSPARA_SIZE] = {0};
+    GetParameter(DISTRIBUTE_MODEM_MULTIDEVICE_ENABLE, "false", multiDeviceEnable, HRIL_SYSPARA_SIZE);
+    if (strcmp(multiDeviceEnable, "true") == 0) {
+        simSlotCountNumber = DC_MD_MAX_SLOT_COUNT;
+    }
+
     TELEPHONY_LOGI("GetSimSlotCount, %{public}d", simSlotCountNumber);
     return simSlotCountNumber;
 }