This study has investigated some factors affecting the childbearing ideals of married women in Tabriz. In this regard, various theories have been used that have discussed fertility and childbearing from an economic, social, demographic and cultural perspective. The research method is survey and the statistical population is all married women aged 15-49 in Tabriz.Through Cochran's formula, the sample size is 446. Sampling method is multi-stage cluster sampling. In a generational comparison, this study examined and compared the two age groups of 15-34 and 35-49 years old. According to the findings of the present study, in both generations of married women aged 15-34 and 35-49, the cost of children has a negative and significant relationship with women's ideals of childbearing. In the younger generation (15-34 years), there is an inverse and significant relationship between the age of marriage and the ideals of childbearing. But this relationship was not significant in the generation of 35-49 years. Also, in both generations, the relationship between women's socio-economic status and ideals of childbearing has not been significant. According to the results of multivariate regression test for two generations of women, the variable of children's cost had a greater impact on the fertility ideals of the generation of married women aged 15-34 years. Given what has been said, the cost of childbearing has become one of the major concerns of families in today's society. Increasing the age of marriage and increasing the livelihood and educational concerns of families can affect the determination of the family dimension and the future of the country's population.