The enlarged pituitary gland produces the effect of compression, which will lead to the patient to develop headache symptoms, such as forehead or bilateral temporal pain, and a few patients may develop headache symptoms on one side of the forehead. If the tumor enlarges and compresses the optic nerve crossings, it will lead to blurring of vision, vision loss, changes in the fundus of the eye, and in serious cases, it may even lead to blindness of both eyes. If the optic papilla of the patient shows atrophy, the patient will also show that he/she can’t see things clearly. And if it affects the hypothalamus, it will lead to urolithiasis, which manifests itself in symptoms such as polydipsia, polyuria, and irritable thirst. If the pituitary gland is enlarged and presses the brain nerves, it will also easily cause the patient to have the symptoms of paralysis of the extraocular muscles of both shadows and bilateral eyelid ptosis when looking at things.