The present study was aimed to determine the relationship between social support & optimism and pessimism among diploma female students in Asharqyia North Governorate. A descriptive method was used. The sample of this study consisted from (162) of general diploma female students in Asharqyia North Governorate. Optimism & Pessimism scale (Abdul Khaleq, 1996) was used, also The Social Support Scale (Al-Abashi ,2017) was used. The results of the research showed a high level of social support and a high level of optimism among the study sample. The results also showed a low level of pessimism. The results showed an inverse association between social support and pessimism. The simple regression results explained 6.1% of the variance in pessimism due to social support. The study recommended emphasizing the support and support of family and friends for diploma students, and the need to conduct other studies related to social support.