High signaling in the posterior pituitary is not normal. The posterior pituitary gland is a collective term for the middle and neural portions of the pituitary gland. Intermediate pituitary cells secrete melanocyte-stimulating hormones that promote melanin synthesis by skin melanocytes. Cranial magnetic resonance examination shows high signal in the posterior lobe of the pituitary gland may be suffering from pituitary tumor or pituitary hyperplasia. It is recommended to improve the endocrine hormone examination. If the lesion is small, it can be closely followed up and periodically reviewed for comparison. If the lesion is large, or if there are symptoms of polydipsia or vision changes, early surgical treatment should be performed. Therefore, if the cranial magnetic resonance examination suggests the presence of high signals in the posterior pituitary gland, it is recommended to consult the relevant departments in a timely manner to determine the severity of the disease, and adopt targeted treatment plans under the guidance of doctors according to the specific conditions.