STR molecular testing is necessary for the diagnosis and analysis of hyperemesis gravidarum. Staphylococcus is the most common trophoblastic disease of pregnancy, with a relatively high incidence in Chinese women. Staphylococci are categorized into complete and incomplete staphylococci, and there are various types of staging. Pathomorphology alone is less accurate for early diagnosis of hyperemesis gravidarum STR molecular testing is a new type of molecular biotechnology, and short tandem repeat sequence (STR) technology is currently recognized as the most advanced diagnostic tool for hyperemesis gravidarum. STR analysis provides strong support for the typing and diagnosis of staphylococcus, and is more conducive to the prognosis and treatment of patients with staphylococcus, so it is necessary to carry out.