Based on the theory of "prevention of disease before it occurs"， this paper explores the pathogenesis and progression of membranous nephropathy， focusing on the role of "dampness， heat， and blood stasis" as the fundamental causes. The approach emphasizes early prevention， controlling potential risks and secondary factors for disease occurrence. Starting with reinforcing lung defense， preventing blood stasis， and early detection and intervention， prescriptions such as Yupingfeng Powder （玉屏风散） and Xiaochaihu Decoction （小柴胡汤） are recommended. During disease progression， the significant role of dampness and blood stasis in pathogenesis is highlighted. Treatment strategies focus on eliminating dampness and turbidity， clearing heat and promoting urination， cooling blood and resolving blood stasis， activating blood circulation and unblocking meridians， and detoxifying the bowels. Prescriptions like Bixie Fenqing Decoction （萆薢分清饮）， Sanren Decoction （三仁汤）， and Taohong Siwu Decoction （桃红四物汤） are used. Concurrently， attention should be given to managing complications such as anemia， cardiovascular diseases， and osteoporosis， controlling their progression， and promoting recovery. The approach also includes improving the patient's constitution， regulating emotions， adjusting diet， and preventing colds to reduce recurrence， providing a reference for the prevention and treatment of membranous nephropathy using traditional Chinese medicine.