How to add devices to iphone health?

1. First, open the health app on Apple's mobile phone and click the data source button at the bottom of the main page.

2. Secondly, you can see the data source in the pop-up page, select the application to be set, click Open, and click the Open All Categories button in the page.

3. Finally, in the page that pops up, you can set it under the condition of allowing reading data.