The correct use of pregnancy test paper includes the time of detection, collection of urine, test paper detection, and observation of the results. 1. Detection time: the test paper should be tested 14 days after intercourse, the test time should not be too early, so as not to affect the test results. 2. Collection of urine: before the test to use a clean and dry container to collect urine, at first try to choose the morning urine to test pregnancy, morning urine in the human chorionic gonadotropin concentration is higher, the test results will be more accurate. 3. Test paper test: Before the test, check whether the test paper is within the validity period, there is no contamination or damage, hold the test strip with an arrow mark on the end of the test strip immersed in a container with urine, 3 seconds after removing the flat, 3-5 minutes to observe the results. 4. Observe the results: the test results of a bar negative is not pregnant, the test results of a dark and light weak positive may be pregnant, and then after 5-7 days to re-take the morning urine test again, the results become two bars positive, accompanied by menstrual pause does not come, basically indicates that women are pregnant. The correct method of pregnancy test should be mastered, and the result of the test is more accurate.