How do you say "What should I do?" in Japanese?

Quick use

Use なにをすればいいですか (nani o sureba ii desu ka) at work when you understand the topic but do not know the next concrete action.

Chunk or pattern

• Reusable pattern: 〜 を / すれば いいですか
• Replace 〜 with the action or task you want to ask about.
• Useful swaps: どれを, なにを, どこを.

Core words

• なに: what.
• する: to do.

Helper words and endings

• を: marks the thing or action you are asking about.
• すればいいですか: works like **what should I do?**

Practical note

This is stronger than simply saying わかりません. It tells the other person you need the next action, not just another explanation.