Correct dredging meridians generally not harmful. Chinese medicine believes that the meridians are the five viscera and six bowels of the body skin, limbs, five senses and seven orifices interconnected channels, meridians have the operation of qi and blood, communicating with the body surface up and down, regulating the functional activities of the internal organs and tissues. Meridians through the operation of blood and qi, and yin and yang, so that the body’s functional activities to maintain a relatively coordinated balance. Various reasons for the meridians and blood disorders, resulting in meridians and blood bias bias, meridians and blood reverse disorder, meridians and blood stagnation (qi and blood transport is not smooth, blocked stagnation), caused by a variety of pathologies, the treatment should dredge the meridians and regulate qi and blood. Clearing the meridians and regulating qi and blood is an important method of clinical treatment. To dredge the meridians is to regulate the meridians and qi, and dredging the meridians plays an important role in coordinating yin and yang, resisting diseases and evils, and maintaining the normal physiological functions of the human body. However, it should be noted that it is recommended to treat under the guidance of a professional physician, and not blindly self-medication, acupuncture, massage, so as not to make a mistake.