Introduction: Mental health is not just the absence of mental illness but is closely related to physical health and social well-being. Pregnancy and childbirth affect various physical and mental changes in women. Anxiety and depression are the most frequently mentioned mental disorders among pregnant women and mothers. Anxiety is described as prenatal or postnatal sadness while treating the symptoms of depression requires increased care for the pregnant woman and the mother. Aim: This research aims to present relevant data on the frequency of mental disorders among pregnant women and mothers who relate to the city of Velika Gorica in the years 2018. and in 2019. Furthermore, the aim is to determine possible differences in the occurrence of mental disorders among pregnant women and mothers in the area of the city of Velika Gorica compared to the available data from researches that refer to the rest of Europe and the world. Methods: A total of 203 respondents were included in the study. 118 women were examined within a group of mothers, while 85 were examined as a part of the group of pregnant women. All respondents are from the area of the city of Velika Gorica and are supervised by the patronage service of the Zagreb County Health Center. The condition for participation in the research was getting acquainted with the subject of the research and signing informed consent, as well as the absence of previously established mentally disturbed health. Results: The research data shows that there is a statistically significant difference in the occurrence of mental disorders among pregnant women and mothers from the city of Velika Gorica in comparison to the other countries in Europe and the world. This disproved the hypothesis that there is no significant difference in the frequency of mental disorders in pregnant women and mothers in the city of Velika Gorica compared to the same parameters in Europe and the world. Conclusion: Mental disorders among pregnant women and mothers are becoming an increasing public health problem. To reduce the incidence of anxiety and depression among pregnant women and mothers, it is important to educate health care professionals, including community nurses, and to draw attention to the prevention and timely treatment of these disorders.