Pregnancy test is to detect the chorionic gonadotropin in women’s body, the appearance of this phenomenon indicates that the patient’s body hormone level is relatively low, one possibility is that the patient has just been pregnant, so there will be such a phenomenon, there is also a possibility that due to the poor development of the embryo, there will be a relatively low level of hormone level, and there are a very small number of people who may be ectopic pregnancy, which can also lead to the occurrence of such a situation. Therefore, in the clinic, if the second line is very shallow, it is better to go to the hospital to take a blood test, because the blood test will have a specific number, and it is more accurate than the urine test, and more importantly, it can dynamically observe the size of the number to determine whether the child’s development is normal or not.