Systolic blood pressure of 155 mmHg belongs to grade 1 (mild) hypertension, according to the classification and definition of hypertension in China, hypertension is divided into grade 1, grade 2 and grade 3 according to blood pressure level. grade 1 hypertension refers to systolic blood pressure of 140-159 mmHg and/or diastolic blood pressure of 90-99 mmHg, although it is grade 1 hypertension, it is also a risk factor for cardiovascular disease, so it is necessary to actively take comprehensive treatment measures, including a healthy lifestyle, such as quitting smoking and limiting alcohol, eating a reasonable diet, maintaining an appropriate weight, exercising in moderation, avoiding prolonged mental stress, and getting enough sleep. After 4-12 weeks of lifestyle interventions, blood pressure is still at 155 mmHg and medication should be initiated to bring the blood pressure up to standard. In addition, although the hypertension is only 155mmHg, it is also necessary to cooperate with the doctor for further examination to clarify whether it is primary or secondary hypertension, so that targeted treatment can be given.