diff --git a/homeassistant/components/tuya/number.py b/homeassistant/components/tuya/number.py
index 68777d75a90..5aee426da8c 100644
--- a/homeassistant/components/tuya/number.py
+++ b/homeassistant/components/tuya/number.py
@@ -381,6 +381,8 @@ class TuyaNumberEntity(TuyaEntity, NumberEntity):
             self._attr_native_max_value = self._number.max_scaled
             self._attr_native_min_value = self._number.min_scaled
             self._attr_native_step = self._number.step_scaled
+            if description.native_unit_of_measurement is None:
+                self._attr_native_unit_of_measurement = int_type.unit
 
         # Logic to ensure the set device class and API received Unit Of Measurement
         # match Home Assistants requirements.
diff --git a/tests/components/tuya/snapshots/test_number.ambr b/tests/components/tuya/snapshots/test_number.ambr
index 125a0680de9..1b19d5827ab 100644
--- a/tests/components/tuya/snapshots/test_number.ambr
+++ b/tests/components/tuya/snapshots/test_number.ambr
@@ -95,7 +95,7 @@
     'supported_features': 0,
     'translation_key': 'feed',
     'unique_id': 'tuya.bfd0273e59494eb34esvrxmanual_feed',
-    'unit_of_measurement': None,
+    'unit_of_measurement': '',
   })
 # ---
 # name: test_platform_setup_and_discovery[cwwsq_cleverio_pf100][number.cleverio_pf100_feed-state]
@@ -106,6 +106,7 @@
       'min': 1.0,
       'mode': <NumberMode.AUTO: 'auto'>,
       'step': 1.0,
+      'unit_of_measurement': '',
     }),
     'context': <ANY>,
     'entity_id': 'number.cleverio_pf100_feed',
@@ -152,7 +153,7 @@
     'supported_features': 0,
     'translation_key': 'temp_correction',
     'unique_id': 'tuya.bfb45cb8a9452fba66lexgtemp_correction',
-    'unit_of_measurement': None,
+    'unit_of_measurement': '℃',
   })
 # ---
 # name: test_platform_setup_and_discovery[wk_wifi_smart_gas_boiler_thermostat][number.wifi_smart_gas_boiler_thermostat_temperature_correction-state]
@@ -163,6 +164,7 @@
       'min': -9.9,
       'mode': <NumberMode.AUTO: 'auto'>,
       'step': 0.1,
+      'unit_of_measurement': '℃',
     }),
     'context': <ANY>,
     'entity_id': 'number.wifi_smart_gas_boiler_thermostat_temperature_correction',