The subject of this master thesis is the issue of life quality in one-parent families as well as differences with parents in two-parent families. The goal of this master thesis is to assess life quality in one-parent families and determine how and how much is it connected with the fact that they alone raise their child/children. 116 respondents (parents) participated in the research, 47 parents were from one-parent families. A questionnaire about life quality was used from World health organisation, which was amended with questions regarding age, gender, number of children and their ages, family type and two questions were used to examine their opinion about factors that contribute or aggravate life quality achievement and life wellbeing of oneparent families. For data processing, i.e. for determining differences between two independent samples, the Mann-Whitney U test was used, which test finds differences between four questions (“How would you access your life quality?”, “How much does pain stop you in fulfilling your obligations?”, “How much are you satisfied with your sleeping?” and “How much are you satisfied with your means of transport?”). By processing descriptive questions about factors that contribute and aggravate the life quality of one-parent families, it was determined that there are seven categories in which answers were grouped (mutual relationship between parents and children, finances, free time, help and support, influence of state, i.e. its system, society and health).