Ultrasound can be done during menstruation, as follows: 1. During menstruation, if necessary, clinicians can issue an examination request form for ultrasound. Transabdominal ultrasound is preferred to examine the uterus and adnexa during menstruation, but patients need to drink water and hold urine in advance for preparation; 2. This can provide more detailed imaging data to the clinic to determine the patient’s condition; 4. If the bleeding is heavy during menstruation, it is also necessary to consider the patient’s special condition and avoid transvaginal ultrasound as much as possible, and transabdominal ultrasound can also meet the diagnostic requirements.