Check whether the milk is refrigerated, whether the heating time is too short when using fast mode. Solution: When choosing to quickly warm milk, please set longer heating time. After the quick heating milk is completed, it turns to warm milk. At this time, you need to add another 160ml of water to achieve the warm milk effect. Check whetherIs the thermal conductivity of the container for milk is poor. Solution: Please replace the container of milk and heat it again.