The key checkups for pregnancy include the following: 1, sex hormone six and thyroid function test. 2, eugenics five. 3, liver and kidney function. 4, AIDS, syphilis screening. 5, electrocardiogram. 6, ultrasound. 7, gynecological routine examination, gynecological routine examination includes examination of the vulva, vagina, and cervix, to find out whether there is any inflammation in the local area, and if necessary, you can do the routine laboratory test of leukorrhea. If you have not done cervical cancer screening within one year, it is recommended that you do cervical cancer screening at the same time to find out whether the cervical epithelium has lesions, or if you find abnormal superfluous organisms locally in the cervix, it is also recommended that you do cervical cancer screening. These are the key tests that need to be done before pregnancy, but it is advisable to give a comprehensive examination.