This paper discusses the online teaching mode of English linguistics based on the "Internet plus" perspective. This paper analyzes on the influence of the "Internet plus" perspective on English linguistics teaching, as well as the characteristics and advantages of online teaching, and probes into the present situation and development trend of the online teaching mode of English linguistics. On this basis, it proposes the design of online teaching mode of English linguistics based on the "Internet plus" perspective, including the construction of teaching content and resources, the selection of teaching methods and tools, the analysis of learners' needs and personalized teaching, and the design of interaction and feedback mechanism. In response to future development and challenges, strategies and suggestions are proposed to increase infrastructure construction, increase investment in teacher training and professional development, as well as home school cooperation, and cultivate students' autonomous learning and management abilities. This paper comprehensively discusses the online teaching mode of English linguistics from the perspective of "Internet plus", hoping to provide useful reference and guidance for teaching practice in related fields.