Reset Password in drupal 7 I want following functionality when user click on forgot password. 

I want user will get an email to rest his password. when he click the link, A new password wil generated and send into his email 

Any idea? 

Thanks
By default Drupal has forget password functionality which will send the one time password link to the user. may be you can use this  https://www.drupal.org/project/simple_pass_reset module if it matches your requirement

https://stackoverflow.com/questions/24051390/change-admin-password-in-drupal-7