"What does it need?"

Pollination - but what have your temperatures been lately? Because of high temps or other possible causes discussed below the blooms are not pollinating themselves. Eggplant, like tomatoes, self-pollinates (are self-fertile) and, like tomatoes and other fruiting vegetables are subject to blossom drop. See the FAQ linked below for all the basics or do a search here on blossom drop for many varied posts about it.

Hope this helps. ;)

Dave

Here is a link that might be useful: Blossom Drop