Actually, if you have backed up your iPhone Safari Bookmark with iTunes before lost, you can restore it by extracting the backup file. If you didn't back up, you still can directly scan and recover lost Bookmark from your iOS device before it's overwritten by new data.
iPhone Data Recovery offers you both the methods by providing 3 recovery mode: "Recover from iTunes Backup Files", "Recover from iOS Devices" and "Recover from iTunes iCloud Files".
Part 1: How to [http://www.czqsoft.com/useguides/How-to-Restore-Lost-Safari-Bookmarks-from-iPhone|Recover Deleted Safari Bookmarks from iPhone Directly]
Part 2: How to [http://www.czqsoft.com/useguides/How-to-Restore-Lost-Safari-Bookmarks-from-iPhone|Restore iPhone Safari Bookmarks from iTunes]