which one is better?

Are you coming to work daily?
Are you coming to work every day?
which one is better?

They are both correct English. To my mind there is a slight difference in meaning, with “every day” more clearly stating that no days will be missed. The second sentence also seems a bit more conversationally natural/likely to me.

In these sentences, the tense “are you coming” would normally be used to ask about intended future behaviour. If you want to ask about past-to-present behaviour, or about general habits, you should ask “Do you come to work daily / every day?”