The Purpose of this research, Explaining life satisfaction and Academic achievement based on Parenting Styles and psychological hardiness. For this purpose 500 students of Semnan University in year 2014 were selected through Multi-stage cluster sampling. questionnaires Parenting Styles Baumrind, life satisfaction (SWIS) and psychological hardiness were used for data collecting. The results showed that Parenting Styles with life satisfaction, academic achievement and psychological hardiness are correlated directly. Path analysis results showed, the largest path coefficient as to variable influence academic achievement on life satisfaction, and the smallest path coefficient as to variable influence life satisfaction is on the authoritative style. The considering results can be improved life satisfaction and academic achievement by parenting styles (democratic) and psychological hardiness.