Fortunately,I got my photos back! In case that you may need mobile phone data recovery,I would like to share it with you guys here!

You can recover lost,deleted or formatted files from memory card of your mobile phone like this:
1. Do not save any new files into the memory card of your phone.
2. Connect it with computer. You should see memory card shown as a drive letter (like H:) in My Computer.
3. Download this mobile data recovery software called Tenorshare Data Recovery (You can get it from http://www.any-data-recovery.com ) into your computer.
4. Install and open the program, select your memory drive, and click 'Start' button to start scanning process which will find your files.
Note:
For Mac users, you can try Tenorshare Data Recovery for Mac. It can used to recover lost, deleted data from iPhone as well.
Here is a tutorial I found in the website.
Mobile Phone Data Recovery-Recover Files from Mobile Phone

