Long-term insomnia is not a clinical symptom of malignant tumors, but long-term insomnia may increase the risk of malignant tumors. Long-term insomnia will lead to endocrine disorders, reduced immune function, decreased resistance and other phenomena, while the human body contains oncogenes and oncogenes, if the immune system is reduced may give the oncogenes to create good conditions, may promote the occurrence of malignant tumors, so it is very necessary to maintain sufficient regular sleep. However, the clinical symptoms of malignant tumors do not include long-term insomnia, long-term insomnia may be caused by psychological reasons, and it is recommended that patients go to the hospital in time for consultation.