Chest tightness and insomnia can see cardiology, psychiatry, endocrinology and so on. 1. Cardiology: patients with chest tightness and insomnia should first exclude whether they suffer from heart diseases such as coronary heart disease, arrhythmia, etc. This kind of disease will cause chest tightness and insomnia, so patients can go to the cardiology department to exclude this kind of disease. 2. Psychiatry: Chest tightness and insomnia are caused by anxiety, depression, neurosis, etc., which can also cause patients to sleep poorly. Therefore, patients can also go to the psychiatry department in order to exclude related diseases. 3. Endocrinology: Thyroid diseases (hyperthyroidism, hypothyroidism, etc.) can also cause the above symptoms. In addition to the above reasons, women can also suffer from chest tightness and insomnia during menopause, so they can go to the gynecology department for consultation.