Prolactin 1300mIU/L may be caused by recent unhealthy lifestyle, which can be restored after adjustment, but it may also be caused by pituitary tumor, which needs to be analyzed specifically. Prolactin 1300mIU/L may be caused by recent unhealthy lifestyle, such as staying up late, strenuous exercise, eating a high-fat, high-protein diet, etc., which can be restored after a period of time by improving the lifestyle. However, prolactin 1300mIU/L may also be caused by pituitary tumor, which may be accompanied by amenorrhea and lactation in female patients, and breast enlargement or lactation in male patients, which need to be treated by surgery. It is recommended that once patients find that their prolactin is 1300mIU/L, they should consult a doctor in time to improve the relevant examination and standardize the treatment.