The presence of blood flow in the lymph nodes of the neck is not normal. The presence of blood flow in the lymph nodes indicates that the lymph nodes may be significantly enlarged in size, resulting in abnormal lymph node manifestations. Normal lymph nodes usually do not have blood flow signals, if the lymph nodes have blood flow signals, it means that the lymph nodes may have bacterial infections causing inflammation or tumor lesions. If the body is accompanied by obvious foci of infection, it can be treated by active anti-infection treatment, which can be carried out with drugs such as cefixime dispersible tablets and roxithromycin capsules. If there is blood flow signal in the lymph nodes caused by tumor lesions, it is recommended to go to the regular hospital for further examination and lymph node biopsy if necessary, so as to clarify the cause of the disease and then treat the symptoms. If it is a tumor, it is recommended to go to the hospital for standardized treatment in time to avoid the progression of the disease.