The "Standard for Family Maternal and Child Care Services" issued by the National Standards Committee clearly stipulates the monthly care: according to the different needs of customers for maternal and child life care services and the different work experience and service skills of maternal and child life caregivers, maternal and child life care services are divided into six grades: one star, two stars, three stars, four stars, five stars and gold medals, of which one star is the lowest grade and the gold medal is the highest grade.

Yue Yue, commonly known as nurse practitioner, mainly provides professional care for pregnant women and newborns. The service content is mainly month care, accounting for 80% of newborns and 20% of parturients. Yue Yue is a senior domestic worker, different from ordinary domestic nurses. Under normal circumstances, the work of Yueyue is a trinity of nurses, nutritionists and neonatal care. Usually, the monthly service time is 12 hours. And most of them provide services in customers' homes.