The objective of this study was to observe the effect of nursing care based on goal-oriented mind-mapping on the prognosis of patients with severe brain injury. Clinical data of 116 patients with severe brain injury admitted to Qinghe County Central Hospital between March 2021 and August 2023 were retrospectively analyzed. Based on the nursing mode the patients received, they were divided into an Observation group (n = 58, patients received nursing based on the goal-oriented mind mapping mode) and a Control group (n = 58, patients received routine care). Data on length of hospital stay, complications, functional recovery, cerebral oxygen metabolism, and quality of life scores of the 2 groups were collected and analyzed. The length of hospital stay of the Observation group was shorter than that of the Control group (P < .05). The total incidence of complications in the Observation group was lower than that in the Control group (P < .05). After intervention, neurological function, cerebral oxygen metabolism indicators, and quality of life of the 2 groups improved significantly compared with those before the intervention; furthermore, the neurological function and cerebral oxygen metabolism indexes of the Observation group were better than those of the Control group (P < .05). The nursing care based on goal-oriented mind-mapping model for patients with severe brain injury can effectively shorten the length of hospital stay, reduce the occurrence of prognostic complications, and improve the recovery of neurological and limb motor functions, and ultimately achieve the goal of improving the quality of life.