Abstract: Based on the compound pathogenesis theory of malignant tumor, this article combines the theories of positive-evil, yin-yang, and central qi theories with the theory of cancer toxin, pointing out that the deficiency of positive and excess of evil are the basis for the onset of tumors. The pathogenesis characteristics of tumors are the loss of both yin and yang, stagnation of qi, and cancer toxin deeply lurking. The paper believes that the loss of both yin and yang often originates from the spleen and kidney, stagnation of qi is first blamed on the spleen and stomach, and cancer toxin deeply lurking often accompanies multiple evil qi. Based on this, the detoxication method of warming and nourishing is proposed to treat malignant tumors. It is the combination or sequential application of the three methods of warming, nourishing, and detoxification, which play the role of warming and nourishing together, harmonizing yin and yang; promoting the circulation of qi, relieving depression, and regulating emotions; eliminating cancer and toxin, and breaking the combined evil.