Objective To investigate the adherence status of hypertension-related health behaviors in people with high-normal blood pressure and analyze its influencing factors, so as to provide a basis for formulating targeted nursing intervention strategies. Methods A total of 131 individuals with high-normal blood pressure were selected as research subjects by convenience sampling. A self-designed general information questionnaire and the Hypertension-Related Health Behavior Adherence Scale were used for investigation. Multiple linear regression analysis was used to explore the influencing factors of hypertension-related health behavior adherence in people with high-normal blood pressure. Results A total of 118 valid questionnaires were collected. The total score of the Hypertension-Related Health Behavior Adherence Scale in people with high-normal blood pressure was (34.72±6.25), and the dimensional scores of daily behavior management ability and tobacco/alcohol preference management ability were (29.30±5.36) and (5.42±1.96), respectively. Item analysis showed that adherence to psychological adjustment behaviors (such as stress regulation) was the best, while adherence to structural management behaviors (such as regular blood pressure monitoring and setting clear nursing goals) was the poorest. Multiple linear regression analysis showed that gender and education level were independent influencing factors for hypertension-related health behavior adherence in people with high-normal blood pressure(all P<0.05), with females and those with higher education level showing better adherence to hypertension-related health behaviors. Conclusion The adherence to hypertension-related health behaviors in people with high-normal blood pressure is at a moderate level, with a structural contradiction of "strong psychological willingness but weak implementation management", and is affected by factors like gender and education level. Future nursing interventions should focus on weak links such as blood pressure monitoring and goal setting, and provide more targeted and skill-oriented health management support for males and those with a low education level to improve their self-management efficacy and delay the progression of hypertension.