1. Responsible for the construction and maintenance of external links of the website, and exchange links to ensure the quality, quantity and relevance of friends' links; 2. Responsible for the writing of marketing soft articles, do a good job in website promotion through blogs, forums and other channels, increase the external links of websites and introduce recommended traffic; 3. Manually publish a number of external links according to the company's mission requirements every day to increase website traffic; 4. It is required to sort out and excavate external chain resources, and regularly submit external chain implementation plans and statistical reports, such as URL, BR, inclusion, etc. Web sites with external links and high weight; 5. Record the work log of the external chain specialist every day to facilitate the later tracking effect and summarize it once a week. For the external websites with better effect, you can share them with everyone and sum up more experience.