Menstruation is menstruation, and bright red blood is usually normal. If there are no other uncomfortable symptoms such as excessive menstrual flow or irregular periods, it is normal for the menstrual period to be bright red in color. At the beginning as well as towards the end of the period, the color of the period is darker and may appear brown. During menstruation, if the menstrual blood is discharged smoothly, it may appear bright red on days when there is more menstrual blood, or it may appear dark red if the bright red blood is oxidized by air. When women have other uncomfortable symptoms in addition to the bright red color of menstruation, there may be pathological causes, and at this time, they need to go to the hospital in time to seek medical treatment, and carry out standardized treatment under the guidance of the doctor.