Ovulation test paper with two bars shows positive, positive indicates that the luteinizing hormone level in the body is elevated. The presence of two purple-red lines, the upper end of the line is darker than the lower end of the line, indicating that the luteinizing hormone in the urine has not yet peaked, it is recommended to test every day. The presence of two purple-red lines, the upper and lower ends of which are almost the same color, or the lower end is darker than the upper end, indicates that ovulation will occur within 24 to 48 hours. The appearance of only one purple-red line and the upper end of the line indicates that ovulation has not occurred. The accuracy of ovulation test paper is still not 100%, if women are planning to have children, they can go to the hospital for ultrasound examination and observe whether there are mature follicles under the guidance of professional doctors.