The importance of family is such that the health and growth of any society depends on the health and growth of its families. Coping strategies are cognitive and behavioral strategies that are used to meet the demands of daily life. Happiness is a feeling of confidence and satisfaction, everyone is happy in a special way. This research aimed to determine the relationship between family functioning and coping styles against mental pressures with happiness in 12th grade secondary school students in Some Sara city. And the sample size of 175 people was selected from the society by random sampling method. The research design is descriptive and correlation between variables, the research tools were Bloom Family Function Questionnaire, Stress Coping Strategies Questionnaire (Andler and Parker) and Oxford Happiness Questionnaire. that the students completed these questionnaires, in order to analyze the data in the descriptive statistics section, the average standard deviation and in the inferential statistics section, correlation and multiple regression tests (step by step model) were used. The results of the data showed that between the family's performance And there is a significant correlation between coping styles against psychological pressures and happiness, thus, problem-oriented and emotion-oriented coping styles have a positive correlation with happiness, and an avoidant coping style has a negative correlation with happiness.