diff --git a/homeassistant/components/xiaomi_aqara/entity.py b/homeassistant/components/xiaomi_aqara/entity.py
index 69e14fa6b4f5..4c9be755dd18 100644
--- a/homeassistant/components/xiaomi_aqara/entity.py
+++ b/homeassistant/components/xiaomi_aqara/entity.py
@@ -103,6 +103,7 @@ class XiaomiDevice(Entity):
         else:
             if TYPE_CHECKING:
                 assert self._gateway_id is not None
+                assert self.platform.config_entry is not None
             device_info = DeviceInfo(
                 connections={(dr.CONNECTION_ZIGBEE, self._device_id)},
                 identifiers={(DOMAIN, self._device_id)},
@@ -110,7 +111,11 @@ class XiaomiDevice(Entity):
                 model=self._model,
                 name=self._device_name,
                 sw_version=self._protocol,
-                via_device=(DOMAIN, self._gateway_id),
+                via_device_id=dr.async_get_device_id_by_identifier(
+                    self.hass,
+                    (DOMAIN, self._gateway_id),
+                    config_entry_id=self.platform.config_entry.entry_id,
+                ),
             )
 
         return device_info
diff --git a/tests/components/xiaomi_aqara/test_init.py b/tests/components/xiaomi_aqara/test_init.py
new file mode 100644
index 000000000000..258f0284ce60
--- /dev/null
+++ b/tests/components/xiaomi_aqara/test_init.py
@@ -0,0 +1,84 @@
+"""Test the Xiaomi Aqara setup and device registry linking."""
+
+from collections import defaultdict
+from unittest.mock import AsyncMock, Mock, patch
+
+from homeassistant.components.xiaomi_aqara import const
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.const import CONF_HOST, CONF_MAC, CONF_PORT, CONF_PROTOCOL
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import device_registry as dr
+
+from tests.common import MockConfigEntry
+
+TEST_HOST = "1.2.3.4"
+TEST_PORT = 1234
+TEST_PROTOCOL = "1.1.1"
+TEST_MAC = "ab:cd:ef:00:11:22"
+TEST_MOTION_SID = "158d0001a2b3c4"
+
+
+async def test_child_device_links_to_gateway_via_device_id(
+    hass: HomeAssistant, device_registry: dr.DeviceRegistry
+) -> None:
+    """Test a Zigbee child device is linked to its gateway via via_device_id."""
+    mock_gateway = Mock()
+    mock_gateway.sid = TEST_MAC.replace(":", "").lower()
+    mock_gateway.callbacks = defaultdict(list)
+    mock_gateway.devices = {
+        "binary_sensor": [
+            {
+                "sid": TEST_MOTION_SID,
+                "model": "motion",
+                "proto": TEST_PROTOCOL,
+                "data": {},
+                "raw_data": {"cmd": "report"},
+            }
+        ],
+        "sensor": [],
+    }
+
+    mock_multicast = Mock()
+    mock_multicast.start_listen = AsyncMock()
+    mock_multicast.stop_listen = Mock()
+
+    entry = MockConfigEntry(
+        domain=const.DOMAIN,
+        unique_id=TEST_MAC,
+        data={
+            CONF_HOST: TEST_HOST,
+            CONF_PORT: TEST_PORT,
+            CONF_MAC: TEST_MAC,
+            const.CONF_INTERFACE: "any",
+            CONF_PROTOCOL: TEST_PROTOCOL,
+            const.CONF_KEY: None,
+            const.CONF_SID: mock_gateway.sid,
+        },
+    )
+    entry.add_to_hass(hass)
+
+    with (
+        patch(
+            "homeassistant.components.xiaomi_aqara.XiaomiGateway",
+            return_value=mock_gateway,
+        ),
+        patch(
+            "homeassistant.components.xiaomi_aqara.AsyncXiaomiGatewayMulticast",
+            return_value=mock_multicast,
+        ),
+    ):
+        assert await hass.config_entries.async_setup(entry.entry_id)
+        await hass.async_block_till_done()
+
+    assert entry.state is ConfigEntryState.LOADED
+
+    gateway_device = device_registry.async_get_device_by_identifier(
+        (const.DOMAIN, TEST_MAC), entry.entry_id
+    )
+    child_device = device_registry.async_get_device_by_identifier(
+        (const.DOMAIN, TEST_MOTION_SID), entry.entry_id
+    )
+
+    assert gateway_device is not None
+    assert child_device is not None
+    assert child_device.via_device_id == gateway_device.id