The invention discloses an intelligent door lock with displaying and selling functions. The intelligent door lock with the displaying and selling functions comprises a door lock body. The door lock body is provided with a control module. The control module is connected with a display module, a voice input module and a voice output module. The door lock body is further provided with a sensing module. When the sensing module senses that a customer approaches the door lock by a set distance, the control module says hello to the customer through the voice output module, at the moment, the control module sends an instruction to make the display module to play relevant information of the door lock, and the control module receives questions of the customer through the voice input module and analyzes and answers the questions, so that interaction between the customer and the door lock is realized. The door lock answers the relevant questions of the customers through interactive conversations with the customer, and the display module displays the relevant information of the door lock, so that sellers do not need to introduce the relevant information of the door lock to the customer, and the personnel cost is reduced. Meanwhile, customers get more pleasure in the purchase process and are more willing to purchase the door lock.