Dizziness in 14-year-old girls with low blood pressure can be caused by physiological factors or pathologic factors, and needs to be treated according to the cause, including surgery or drug treatment. 1. Physiological factors: low blood pressure and dizziness may be caused by physiological factors, such as postural hypotension, i.e., low blood pressure caused by sitting or lying down and then suddenly standing up, and low blood pressure caused by lack of water or emotional excitement, which should be supplemented with fluids in time, appropriate rest, and getting up slowly, which can be relieved in general. 2. Pathological factors: endocrine metabolic diseases such as hypopituitarism can be treated with hormone therapy or surgery. Cardiovascular system diseases such as aortic valve or mitral valve severe stenosis, should be the first symptomatic treatment, if necessary, to take valve replacement. Causes of low blood pressure and dizziness in girls are many, girls with low blood pressure and dizziness phenomenon should be timely consultation, after a clear diagnosis of targeted treatment, to avoid delaying the treatment time. At the same time, pay attention to safety, avoid falling.