There are a few things you can do to stop people from sharing your photos on Facebook.

  1. Make sure that your photo album is password protected. This will help to keep people from accidentally sharing your photos with others.
  2. Use a photo management software like Picasa or iCloud to keep track of your photos and protect them from being shared easily.
  3. Use a filter or privacy setting on your Facebook account that will prevent people from seeing all of your photos at once.