different logos at iphone and itunes.?

I had made app ..but the logo is different in itunes 开发者_开发技巧store and in the iphone..where is the problem..What should i do for both the logos to be same...

Icons are different files. See section "Creating Custom Icons and Images" of "Creating Custom Icons and Images" apple documentation.

Create a 512 x 512 pixel version of your application icon for display in the App Store. Although it’s important that this version be instantly recognizable as your application icon, it can be subtly richer and more detailed.