Fennel to raise high blood pressure is nonsense, many people may feel that they belong to the low blood pressure people, want to apply certain foods to raise blood pressure, generally fennel will not raise blood pressure. Fennel does not normally raise blood pressure, but it is a substance that can be used to raise blood pressure by taking saline orally in the morning, or by improving cardiorespiratory function through a standardized diet and physical exercise. However, many people’s low blood pressure belongs to genetic or physical factors, for this is a benign manifestation, the patient need not be overly worried about, there is no effect on the life expectancy of people. However, if postural hypotension or severe hypotension is caused by vagus nerve abnormality or chronic underlying diseases, corresponding drugs should be applied for symptomatic treatment.