Ovulation monitoring with ultrasound is usually performed on the 10th day of menstruation to determine the exact time of ovulation by observing the follicle’s dynamics every two days. Ovulation monitoring with ultrasound is often used to determine the quality of the follicles, thus facilitating good fertilization in the future. The specific method is to observe the follicles every two days starting from the 10th day of menstruation, during which the follicles gradually grow and mature to be discharged from the ovaries. When the process of ovulation goes smoothly, it means that the follicles are of good quality and can be prepared for pregnancy, and the chances of conception are relatively high. If a woman needs to use ultrasound to monitor ovulation, it is recommended to go to the hospital and complete the monitoring under the guidance of the doctor to promote the formation of high-quality follicles and improve the chances of conception.