Data hiding method aims to add some important data in the image .Usually data is hiding in image after encryption of the image with specific algorithm in data hiding section which comes after the encryption section. At Decryption section data is extracted from image and image and data is separated. But there may be chances  of loss of original content of image because of data is hiding after the encryption ,means there may be loss of quality, original content of the image. Application area like Military, Medical where minor changes in original content of image affect lots on. This literature survey discusses all the existing data hiding methodology and their performance