If the test paper is getting lighter and lighter in early pregnancy, biochemical pregnancy, ectopic pregnancy and test paper quality can be considered. 1. Biochemical pregnancy: In addition to the test paper getting lighter and lighter, early pregnancy is accompanied by vaginal bleeding, similar in nature to menstruation, and the ultrasound examination indicates that no gestational sac is seen and the blood HCG value is very low. The first biochemical pregnancy does not need active treatment and intervention, pay more attention to rest and regularly go to the hospital to recheck the HCG value and monitor its changes dynamically, but for recurrent biochemical pregnancy, a comprehensive exclusion examination of all possible causes is needed and targeted treatment is carried out according to the causes; 2. ectopic pregnancy: if the pregnant woman is accompanied by severe abdominal pain and irregular vaginal bleeding, and the ultrasound examination indicates that no gestational sac is seen in the uterus, it is mostly considered Ectopic pregnancy, which requires immediate medical attention. If the symptoms are mild and the amount of bleeding is not much, conservative treatment can be chosen; if the situation is more serious, surgical treatment should be chosen, and the specific treatment plan should be judged by the doctor; 3, the quality of test paper: such as damp test paper or expired test paper can cause the test paper to become lighter and lighter, it is recommended to re-test with new test paper or change the brand of test paper, and it is recommended to go to the hospital to measure blood HCG, which is more accurate.