Symptoms of pituitary tumor in men mainly include: 1, headache. Headache is mainly caused by the increase of intracranial pressure or the pulling of surrounding tissues after the growth of pituitary tumor.2, visual field disorder. The main reason is that the pituitary tumor pulls the optic nerve or affects the blood supply of the optic nerve in the process of growth.3. Symptoms of compression of peripheral tissues, such as compression of the interventricular foramen, aqueduct, etc., which can cause acute intracranial pressure, such as dizziness, headache, nausea, vomiting, and in severe cases, can be manifested as impaired consciousness. If the compression to the hypothalamus, it can be manifested as hypothalamic dysfunction, such as low blood pressure, thermoregulatory disorders, water and electrolyte disorders, heartbeat and respiratory rhythm disorders, etc. 4, it can be manifested as the corresponding endocrine hormone disorders, for example, it can appear as the symptoms of decreased libido, impotence, breast development, breast overflow, scanty beard and so on.