It is not recommended to go for medical checkups during a girl’s menstrual period. Due to the physiological cycle, menstrual blood will contaminate the specimen, and the gynecological examination and laboratory indexes will be affected, which will lead to inaccurate examination results and no clinical reference significance. 1. Contamination of specimens: girls tend to retain menstrual blood on the vulva during menstruation. In routine urine and fecal examination, menstrual blood will contaminate the specimen, leading to inaccurate results. 2. Gynecological examination: gynecological examination during a girl’s menstruation will also be affected, such as gynecological examination, cervical smear and routine leukorrhea examination cannot be conducted during physiological period, and pelvic ultrasound will also be affected. 3. Laboratory indicators: When girls take blood tests during menstruation, certain test indicators will also be affected. Therefore, girls are not recommended to go to the physical examination during menstruation, it is best to end the menstrual period a week before the physical examination, such as physical examination detected abnormalities, it is recommended to go to the hospital in a timely manner to comply with the doctor’s instructions, so as to avoid delaying the condition.