Before you can connect Google Home with Smartmi smart devices, you need to follow these steps:
1.Download "Smartmi Link" app from Google Play or App Store.
2.Sign up or sign in with your Smartmi account.
3.Setup the device with your "Smartmi Link" app, and make sure you can control it in the app.
4.Open Google Home app, search "Smartmi Link" Action and enable it by signing in with the same ID you used in "Smartmi Link" app.
5.After the setup is finished, you can control the device with Google Home.
Devices compatible with Google Home: Smartmi Air Purifier