Tumors occurring in the butterfly saddle area can be called saddle area tumors, which can be divided into intra-saddle, supra-saddle, para-saddle, post-saddle and sub-saddle tumors. There are mainly the following types of tumors: 1. Pituitary adenoma (1) Endocrine manifestation: Growth hormone adenoma: early stage is small, only a few millimeters in size. The main manifestation is excessive growth hormone, excessive growth in adulthood, and even development of gigantism. In adulthood, the growth hormone becomes hypertrophy of the extremities. In some cases, there is an increase in meal size, hairiness, rough skin and hyperpigmentation. In severe cases, the patient feels general weakness, headache and joint pain. It is also associated with hypogonadism, amenorrhea and infertility, and even diabetes. Prolactin cell adenoma: manifests as amenorrhea, lactation, infertility, loss of eyelashes and pubic hair in severe cases, pale and delicate skin, increased subcutaneous fat, weakness, easy tiredness, drowsiness, headache, hypogonadism, etc. In men, hypogonadism, impotence, breast enlargement, beard thinning, and in severe cases, genital atrophy, sperm reduction, and infertility. Adrenocorticotropic adenoma: manifests as centripetal obesity. In severe cases, amenorrhea, loss of libido, general weakness or even bedridden. (2) Visual acuity and visual field disorders: In the early stage, there is often no disorder, but when the tumor grows and compresses the optic nerve, visual acuity and visual field disorders may occur. The tumor may grow up and compress the optic nerve and visual field disorder. The serious case is blindness. 2.Craniopharyngioma can grow in the saddle, on the saddle, beside the saddle or inside and outside the saddle at the same time. It is easy to be mixed with pituitary tumor. Typically, it occurs in children or before puberty. The pituitary gland has low endocrine function, developmental arrest and dwarfism. About 1/3 of patients have uveitis. The visual field is bilaterally temporal hemianopsia or monocular temporal hemianopsia or normal. The optic papilla was primary atrophy or edema and secondary atrophy. Less than 1/2 of the patients had enlargement of the pterygoid saddle, but there were many calcifications on the saddle and in the saddle as its characteristics. 3, saddle node meningioma adult onset, there may be one or temporal side of the hemianopia, primary atrophy of the optic nerve, the butterfly saddle is normal. 4.Saddle ectopic pineal tumor occurs in children and adolescence. There are anterior and posterior pituitary lobe dysfunction. Most of them have temporal hemianopia and primary optic nerve atrophy. The pterygoid saddle is mostly normal. Ectopic pineal tumor should be diagnosed in school-age children and adolescents with uveitis, and then pituitary dysfunction and visual field hemianopia long after.