This study discusses the division of the role of husband and wife in fishing families in Gisik Cemandi Village, Sidoarjo from the perspective of mubādalah. Fishing families have economic characteristics that depend on marine products and weather conditions so that family income is uncertain. This condition encourages a more flexible division of roles between husband and wife in meeting household needs. This study aims to analyze the form of division of roles between husband and wife of fisher families and examine the practice through the perspective of mubādalah. This study uses an empirical legal method with a descriptive qualitative approach. Primary data was obtained through observations, in-depth interviews, and documentation of five married couples from fishing families in Gisik Cemandi village, Sidoarjo. The data were analyzed using the Miles and Huberman model through the stages of data reduction, data presentation, and conclusion drawn, then studied using the concept of mubādalah. The results of the study show that the division of roles in fishermen's families takes place in a flexible and participatory manner. The husband continues to play the main role as a breadwinner through seagoing activities, while the wife helps meet the family's economic needs through shelling, processing seafood, and selling catches. In addition, some husbands also help with domestic work when they have free time. The mubādalah perspective shows that the relationship reflects the principles of reciprocity, cooperation, and partnership in the household. Flexible division of roles is an important strategy for strengthening economic resilience and harmony among fisher families amid uncertain economic conditions.