Abstract: Objective To explore clinical significance of subtemporal decompression in traumatic total anterior circulation infarcts(TTACI).Methods 24 TTACI cases accepted subtemporal decompression were analyzed including CT scan feature, pre operative observation to temporal superficial artery, operative cranial pressure classification and blood circulation in cortical small artery.Results Clinical symptom compared between before and after operation: good 4 cases, unchanged 14 cases, dead 6 cases. CT scan showed infarct areas became smaller in 4 cases, unchanged in 9 cases, larger in 2 cases three months after operation.Conclusion Subtemporal decompression cannot reduce the areas of infarcts and mortality, nor improve neurological function and promote quality of survivor.

Key words: cranial injures, anterior circulation, cerebral infarcts, decompression