Objective: To explore the effect of continuous nursing intervention based on the protective motivation theory (PMT) on self-efficacy, re-drinking, and social function of patients with alcohol-induced psychotic disorder (AIPD). Methods: A total of 100 patients with AIPD admitted to Third People’s Hospital of Fuyang from June 2020 to June 2021 were selected and divided into a control group (n=45) and an observation group (n=55) according to the intervention methods. The control group received routine nursing, and the observation group received continuous nursing based on PMT. The scores of Positive and Negative Syndrome Scale (PANSS), General Self-Efficacy Scale (GSES), Self-Esteem Scale (SES), Social Support Rating Scale (SSRS), Social Disability Screening Scale (SDSS), and Activity of Daily Living (ADL) scale before and after the intervention were compared between the 2 groups. Results: The re-drinking rate of the observation group was significantly lower than that of the control group (49.09% vs 68.89%, P<0.05). The scores of negative symptoms and general psychopathological symptoms in PANSS in the observation group after the intervention were significantly lower than those in the control group (both P<0.05). After the intervention, the GSES score and SES score in the observation group were significantly higher than those in the control group (both P<0.05). The scores of objective support, subjective support, and support utilization in the observation group after the intervention were significantly higher than those of the control group (all P<0.05). After the intervention, the SDSS score and ADL score in the observation group were significantly lower than those in the control group (both P<0.05). Conclusion: The continuous nursing intervention based on PMT can effectively improve the mental symptoms of AIPD patients, improve their self-efficacy, self-esteem, and social support levels, thereby improving their social functions and reducing the re-drinking rate.