The effects and functions of dredging meridians include dispelling wind and dispersing cold (dispelling wind evil and dispelling cold evil), harmonizing qi and blood, promoting qi and activating blood (promoting gas circulation to make blood flow), resolving blood stasis and relieving pain. 1. Unblocking the meridians can dispel wind, cold and dampness, harmonize qi and blood, accelerate the metabolism of the body by promoting the circulation of qi, blood and fluid, and expel the cold and dampness in the body, and it is mainly used for the treatment of colds and fevers caused by wind-cold, itching of rubella, cold paralysis and dampness, or abdominal distension and fullness. 2. Unblocking the meridians can relieve local or generalized swelling and pain caused by stagnation of qi and blood stasis, such as shoulder and neck pain, lumbago, etc. It can also relieve irregular menstruation, dysmenorrhea, amenorrhea, etc., and can also be used to treat bruises caused by stasis of blood and pain, etc. It can move qi and activate blood flow (promote the operation of gases to make blood flow), and remove blood stasis to relieve pain. However, it is important to note that there are many ways to unblock the meridians, the specific method of choice is recommended to be best used under the guidance of a professional Chinese medicine practitioner, or by a professional Chinese medicine practitioner to regulate, so as not to cause other unnecessary injuries.