The family is the most important social institution in which 
human personality is formed and influences society. Family 
members are also influenced by social customs and laws in 
society. Accordingly, custom has an important role and 
influence of the family. In fact, custom is one of the effective 
factors in various dimensions of family law, so that the spread 
of correct custom and following it will lead to the observance 
of their real rights, and otherwise, the foundations of the 
family and thus the foundations of society will be shaken. will 
be. Therefore, in Iranian law, following Imami jurisprudence, 
special attention has been paid to custom and its role in the 
field of family law. Therefore, in this article, the position and 
role of custom in determining the economic rights of women 
in the family is examined. The findings of this study indicate 
that jurisprudential and civil laws in women's financial rights, 
including: determining the amount of dowry, alimony, dowry 
and the return of engagement gifts are greatly influenced by 
custom. This research has been done descriptively and 
analytically