Because there are many causes of swollen supraclavicular lymph nodes, to know what to do, it is necessary to know what causes swollen supraclavicular lymph nodes first, which may be benign diseases, such as viral infections and bacterial infections. If it is a self-limiting viral infection you can leave it alone, if it is caused by a bacterial infection you can apply anti-bacterial drugs. Alternatively, it may be a tuberculous infection, and what needs to be done in this case is timely and effective anti-tuberculosis treatment. Swollen supraclavicular lymph nodes can also be seen in malignant diseases, such as neoplastic diseases, and the most characteristic one is swollen left supraclavicular lymph nodes, which must be alerted to the presence of stomach cancer. If the swollen supraclavicular lymph nodes are really caused by malignant diseases, specific treatment for the malignant tumor itself is needed in a timely manner.