Embodiments of the present disclosure disclose a method, a terminal, and a system for communication pairing of a digital television terminal and a mobile terminal. The method for communication pairing with a digital television terminal includes: acquiring communication connection information of the digital television terminal, wherein the communication connection information includes communication hardware information of the digital television terminal; performing encoding according to the communication connection information to generate a two-dimensional code image; displaying the two-dimensional code image; establishing a link connection to a mobile terminal that acquires the two-dimensional code image by using a camera; and performing communication pairing with the mobile terminal by means of the established link connection. By using the present disclosure, communication connection and pairing between a mobile terminal and a digital television terminal can be completed easily and conveniently.