Generally speaking, various tumor diseases in human body may lead to insomnia and wasting. Tumor is one of the common clinical diseases, including benign tumors and malignant tumors, which generally do not have specific clinical symptoms, and insomnia and wasting are not specific clinical symptoms of certain types of tumors. Various tumor diseases, such as lung cancer, stomach cancer, meningioma, etc., are most likely to cause insomnia, lethargy, fatigue and so on. Of course, malignant tumors are more likely to cause patients to lose weight due to the high catabolism of proteins, etc. Insomnia is often due to the psychological factors of patients, and the fear of death and the fear of tumors often leads to sleep disorders of patients.