What is when i look at my crush she looks away?

There could be a variety of reasons why your crush looks away when you look at her. Here are a few possibilities:

1. She may be shy or nervous around you, which can make her avoid eye contact.
2. She may not be interested in you in that way, and looking away is a way to signal that.
3. She may be in a relationship with someone else and doesn't want to give you the wrong idea.
4. She may not even be aware that she's looking away - it could be a subconscious habit.

It's tough to know exactly what's going on without more context and information. However, if you're interested in getting to know her better, it's worth trying to strike up a conversation with her and see if you can get a better sense of her feelings.