Blood pressure has been low, suddenly rise, first of all to find the cause of the rise, the most common cause of hypertension is the emotional upset and dietary disorders, specific as follows: 1, emotional upset: because of long-term worry and anger will make the liver and qi stagnation, qi stagnation and fire, wind and yang perturbation, will cause the rise of blood pressure. Most of the elevated blood pressure caused by emotional disorders belongs to the evidence of hyperactivity of liver yang, manifested as dizziness, tinnitus, cephalalgia, distension and pain, irritability, irritability, insomnia, dreamy, easy to be aggravated by exertion, and in severe cases, can be suddenly fainted, numbness of limbs, tremor, the treatment should be to pacify the liver and submerge the yang, to clear the fire and quench the wind, the most commonly used representative of the formula is tianmahu houteng drink. 2, diet: if the addiction to alcohol, or binge drinking, and over-eating Spicy, fat, sweet and thick flavor, easy to damage the spleen and stomach, so that the spleen and stomach JianYunDiShi, water and grains do not melt, easy to gather dampness and phlegm, phlegm and dampness in the obstruction is easy to trigger the fluctuation of blood pressure. Most of the blood pressure fluctuation caused by unclean diet belongs to phlegm-dampness obstruction, which is manifested as dizziness, heaviness in the head, spinning of vision, chest tightness, nausea, vomiting, phlegm-salivation, low food intake, and sleepiness. To treat it, we need to dissolve phlegm-dampness, strengthen the spleen and the stomach and treat it with the addition and subtraction of Semen xia bai juju tian ma Tang.