This kind of intraoral scanner is small in size and smart in use, so that the users can get access to their patients’ true-color digital printing pattern timely, reliably and precisely. Moreover, the device has excellent expansion capabilities to support visible doctor-patient communication and standardized medical collaboration, so as further to help dental hospitals and clinics to build a effective eco-chain of digital treatment and expand their treatment or service offerings, which can be widely applied to dental implants, tooth restoration and orthodontics.