Mac Input Method switch shortcut key settings

First, open the System Preferences application in the system, as shown in the figure

Then click to open the "keyboard" option in the System Preferences list, as shown in the picture

Click the "Shortcut" option in the Keyboard Settings window, as shown in the picture

Then click on the left side of the "input source" column, you can see the current system default Input method switch shortcut keys.

For example, here I want to change the default "Select previous input source" shortcut key, double-click it with the mouse, as shown in the picture

Then click the input shortcut you want to set, for example, I set it to the option+ space bar, as shown

This allows you to successfully set up new input method shortcuts, but it is worth noting that when you set up shortcut keys, avoid conflicts with other shortcut keys on the system. MAC System control+ Space bar is to turn on the search function, if you want to set this shortcut, you can first have a shortcut key to change the Spotlight.