Objective This study analyze the risk factors of Clinical Prognosison in patients with SaSAH treated by surgical clipping. Methods From January 2010 to January 2020, 67 cases of SaSAH patients diagnosed by DSA or CTA and subarachnoid hemorrhage diagnosed by head computed tomography (CT). Intracranial aneurysm was treated by surgical clipping followed by nutritional support, neurocritical care and management． Follow up was performed 1 year after discharge by recording GOS, and the patients were divided into good prognosis group (39 cases) and poor prognosis group (28 cases). Results Univariate analysis showed that age and Hunt and Hess Scale were the risk factors of clinical prognosis in patients with SaSAH (P<0.05). Gender, hypertension, diabetes, smoking history and location of responsible aneurysms were not the factors influencing the prognosis of SaSAH patients (P>0.05). Multivariate analysis showed that age and Hunt and Hess Scale were the risk factors of clinical prognosis in patients with SaSAH (P<0.05). The risk of poor clinical prognosis in SaSAH patients aged ≥60 years was 5.430 times higher than that in SaSAH patients aged <60 years. The risk of poor clinical prognosis in patients with SaSAH increased by 3.231 times for each additional unit of Hunt and Hess Scale. Conclusion Compared with low age and low Hunt-Hess grade SaSAH patients, venerable age and high Hunt-Hess grade indicate poor prognosis. When SaSAH patients with high Hunt-Hess grade or venerable age are encountered in clinic, a comprehensive evaluation needs to be carried out before operation, and an individualized and targeted treatment plan should be formulated to reduce the incidence of adverse clinical prognosis as much as possible.