Objective: To analyze the association between the caring ability and the burden, stress and coping of family caregivers of people in cancer treatment. Method: A crosssectional study with 132 family caregivers. The following instruments were applied: a characterization instrument, the Caring Ability Inventory, the Zarit Burden Interview, the Perceived Stress Scale, and the Brief COPE. The Spearman Correlation was used with significance <5%.