diff --git a/homeassistant/components/huawei_lte/diagnostics.py b/homeassistant/components/huawei_lte/diagnostics.py
new file mode 100644
index 00000000000..59d6df56dcb
--- /dev/null
+++ b/homeassistant/components/huawei_lte/diagnostics.py
@@ -0,0 +1,69 @@
+"""Diagnostics support for Huawei LTE."""
+
+from __future__ import annotations
+
+from typing import Any
+
+from homeassistant.components.diagnostics import async_redact_data
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+from .const import DOMAIN
+
+TO_REDACT = {
+    # Entry fields
+    "mac",
+    "username",
+    "password",
+    # device_information
+    "SerialNumber",
+    "Imei",
+    "Imsi",
+    "Iccid",
+    "Msisdn",
+    "MacAddress1",
+    "MacAddress2",
+    "WanIPAddress",
+    "wan_dns_address",
+    "WanIPv6Address",
+    "wan_ipv6_dns_address",
+    "Mccmnc",
+    "WifiMacAddrWl0",
+    "WifiMacAddrWl1",
+    # device_signal
+    "pci",
+    "cell_id",
+    "rac",
+    "lac",
+    "tac",
+    "nei_cellid",
+    "plmn",
+    "bsic",
+    # monitoring_status
+    "PrimaryDns",
+    "SecondaryDns",
+    "PrimaryIPv6Dns",
+    "SecondaryIPv6Dns",
+    # net_current_plmn
+    "net_current_plmn",
+    # lan_host_info
+    "lan_host_info",
+    # wlan_wifi_guest_network_switch
+    "Ssid",
+    "WifiSsid",
+    # wlan.multi_basic_settings
+    "WifiMac",
+}
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    return async_redact_data(
+        {
+            "entry": entry.data,
+            "router": hass.data[DOMAIN].routers[entry.entry_id].data,
+        },
+        TO_REDACT,
+    )