Zhang's bamboo cupping therapy for dredging collaterals is a unique therapy based on the successive pricking blood therapy of doctors in previous dynasties and formed through the continuous clinical exploration of Zhang's generations. It is a comprehensive therapy integrating pricking blood, cupping and drug therapy. Under the guidance of the basic theory of traditional Chinese medicine, it treats according to syndrome differentiation, selects points along meridians, and eliminates pathogenic factors by pricking blood, cupping and hot compress, so as to achieve the purpose of harmonizing qi and blood, balancing yin and yang and restoring healthy qi. It has the characteristics of high efficiency, safety, green and health, and can often achieve immediate magical effects in the treatment of headache, neck, shoulder, lumbago and leg pain.