diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/platform_lib.c b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/platform_lib.c
index 7d7d8d31..e820a63e 100644
--- a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/platform_lib.c
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/platform_lib.c
@@ -1,3 +1,5 @@
+#include <onlp/onlp.h>
+#include <onlplib/file.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include "platform_lib.h"
@@ -173,3 +175,28 @@ int psu_ym2651y_pmbus_info_set(int id, char *node, int value)
 
     return ONLP_STATUS_OK;
 }
+
+#define PSU_SERIAL_NUMBER_LEN	18
+
+int psu_serial_number_get(int id, char *serial, int serial_len)
+{
+	int   size = 0;
+	int   ret  = ONLP_STATUS_OK; 
+	char *prefix = NULL;
+
+	if (serial == NULL || serial_len < PSU_SERIAL_NUMBER_LEN) {
+		return ONLP_STATUS_E_PARAM;
+	}
+
+	prefix = (id == PSU1_ID) ? PSU1_AC_PMBUS_PREFIX : PSU2_AC_PMBUS_PREFIX;
+
+	ret = onlp_file_read((uint8_t*)serial, PSU_SERIAL_NUMBER_LEN, &size, "%s%s", prefix, "psu_mfr_serial");
+    if (ret != ONLP_STATUS_OK || size != PSU_SERIAL_NUMBER_LEN) {
+		return ONLP_STATUS_E_INTERNAL;
+
+    }
+
+	serial[PSU_SERIAL_NUMBER_LEN] = '\0';
+	return ONLP_STATUS_OK;
+}
+
diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/platform_lib.h b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/platform_lib.h
index 7fb175b0..2f0ad8c9 100644
--- a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/platform_lib.h
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/platform_lib.h
@@ -72,6 +72,7 @@ typedef enum psu_type {
 } psu_type_t;
 
 psu_type_t get_psu_type(int id, char* modelname, int modelname_len);
+int psu_serial_number_get(int id, char *serial, int serial_len);
 
 //#define DEBUG_MODE 1
 
diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/psui.c b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/psui.c
index 77074bb8..006402d6 100644
--- a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/psui.c
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/onlp/builds/src/module/src/psui.c
@@ -102,7 +102,9 @@ psu_ym2651y_info_get(onlp_psu_info_t* info)
     if (psu_ym2651y_pmbus_info_get(index, "psu_p_out", &val) == 0) {
         info->mpout = val;
         info->caps |= ONLP_PSU_CAPS_POUT;
-    } 
+    }
+
+    psu_serial_number_get(index, info->serial, sizeof(info->serial));
 
     return ONLP_STATUS_OK;
 }