An electronic apparatus comprising: a camera configured to obtain a first user image of a user; a memory configured to store one or more instructions; and a processor configured to execute the one or more instructions stored in the memory, wherein the processor is further configured to, by executing the one or more instructions: recognize the user from a face region of the first user image by using a first recognition model learned based on face information of a plurality of users, extract appearance information including a plurality of features regarding the recognized user from within a person region and external to the face region of the first user image, wherein the plurality of features included in the extracted appearance information correspond to a plurality of regions for body parts, obtain second recognition model by allowing the first recognition model to additionally learn based on the extracted appearance information, obtain a second user image of the user, and recognize the user from a person region of the second user image by using the obtained second recognition model; in case of the face-region is detected in the second user image, the processor is configured to output a user recognition result based on the face information, and in case of the person region is detected in the second user image, the processor is configured to output the user recognition result based on the appearance information, further characterised in that in case of the face region and the person region are detected in the second user image, the processor is configured to output the user recognition result based on the face information and the appearance information. a camera configured to obtain a first user image of a user; a memory configured to store one or more instructions; and a processor configured to execute the one or more instructions stored in the memory, wherein the processor is further configured to, by executing the one or more instructions: recognize the user from a face region of the first user image by using a first recognition model learned based on face information of a plurality of users, extract appearance information including a plurality of features regarding the recognized user from within a person region and external to the face region of the first user image, wherein the plurality of features included in the extracted appearance information correspond to a plurality of regions for body parts, obtain second recognition model by allowing the first recognition model to additionally learn based on the extracted appearance information, obtain a second user image of the user, and recognize the user from a person region of the second user image by using the obtained second recognition model; in case of the face-region is detected in the second user image, the processor is configured to output a user recognition result based on the face information, and in case of the person region is detected in the second user image, the processor is configured to output the user recognition result based on the appearance information, further characterised in that in case of the face region and the person region are detected in the second user image, the processor is configured to output the user recognition result based on the face information and the appearance information. recognize the user from a face region of the first user image by using a first recognition model learned based on face information of a plurality of users, extract appearance information including a plurality of features regarding the recognized user from within a person region and external to the face region of the first user image, wherein the plurality of features included in the extracted appearance information correspond to a plurality of regions for body parts, obtain second recognition model by allowing the first recognition model to additionally learn based on the extracted appearance information, obtain a second user image of the user, and recognize the user from a person region of the second user image by using the obtained second recognition model; in case of the face-region is detected in the second user image, the processor is configured to output a user recognition result based on the face information, and in case of the person region is detected in the second user image, the processor is configured to output the user recognition result based on the appearance information, further characterised in that in case of the face region and the person region are detected in the second user image, the processor is configured to output the user recognition result based on the face information and the appearance information.