The reason why blood pressure does not come down after taking antihypertensive medication is to consider the following: 1, to rule out whether the antihypertensive medication taken is reasonable, such as grade 2 hypertension to be used in combination with two antihypertensive drugs. If a single antihypertensive drug is taken, it is often not possible to control the blood pressure steadily. 2, because the patient often forgets to take the medication or poor compliance leads to the blood pressure does not come down, this situation should take the medication on time and follow the doctor’s instructions. Some patients forget to take their medication because of dementia in the elderly, and their families can use various methods to remind patients with dementia to take their medication. 3. Patients with refractory hypertension have a difficult time lowering their blood pressure and need to use a combination of three or even four types of antihypertensive drugs to lower their blood pressure. 4. cannot be lowered to normal.