It is better to (do something)
This phrase advises that it is better to undertake a certain action.
Examples
明日早く来たほうがいい。
It would be better to come early tomorrow.
お客様に確認したほうがいい。
It is better to check with the customers.
メニューを見たほうがいい。
It would be better to look at the menu.
Quick check
明日早く来___ほうがいい。