Multiple biochemical pregnancy tests include sex hormone six, A-function five, TORCH, gynecological ultrasound, chromosomes, reproductive immune antibodies, autoimmune antibodies, routine and quality analysis of male semen and so on. Biochemical pregnancy refers to the pregnancy that does not implant in the uterus after the sperm-egg union and can be seen in normal female physiological state. Multiple occurrences of biochemical pregnancies can lead to complete preconception testing. The test program consists mainly of female and male tests. Men can undergo chromosomal and semen routine and quality analysis. Women can undergo routine preconception tests such as sex hormone 6, A-factor 5, TORCH, gynecological ultrasound, and some special tests such as chromosomes, reproductive immune antibodies, autoimmune resistance, etc.. Multiple biochemical pregnancies require detailed gynecological preconception examination to clarify the cause of the disease, and if abnormalities are found, they should be promptly treated in the hospital to help pregnancy.