The present invention relates to a combined model scanning and oral cavity scanning apparatus. The combined model scanning and oral cavity scanning apparatus comprises: an optical three-dimensional measurement unit for generating light, obtaining intraoral shape information according to measurement of the tooth shape within the intraoral using the generated light, and obtaining model shape information according to measurement of the tooth model shape； a data processing unit for receiving the intraoral information or the model shape information and then generating three-dimensional tooth data used to generate a three-dimensional tooth image； and a data transmission unit for transmitting the three-dimensional tooth data.
