Low blood pressure is diastolic blood pressure, and a diastolic blood pressure of 103 mmHg is considered high. If it is caused by emotional excitement, it is not serious. If the blood pressure remains high for a long time, it should be considered as secondary hypertension, which is more serious. Under normal circumstances, the body is in a quiet state when the diastolic blood pressure is 60~90mmHg, systolic blood pressure is 90~140mmHg. 1. When the body is in an emotional state, such as irritability, panic, etc., it will excite the sympathetic nerves, and then cause a transient increase in blood pressure, resulting in diastolic blood pressure rose to 103mmHg, and can be recovered by itself after the mood stabilizes. 2. If the blood pressure is high for a long time, the diastolic blood pressure is at 103mmHg, and the result of three random measurements of blood pressure is the diastolic blood pressure is greater than or equal to 90mmHg, or (and) the systolic blood pressure is greater than or equal to 140mmHg, then the diagnosis of hypertension can be made. If the diastolic blood pressure is between 100 and 109 mmHg, it is necessary to consider secondary hypertension, so a diastolic blood pressure of 103 mmHg is more serious. It is recommended that patients with a diastolic blood pressure of 103mmHg should go to the hospital in time for relevant examinations to clarify the cause of the disease.