Malignant reproduction generally refers to the growth mode of malignant tumors, which is a kind of unrestricted reproduction, and the surrounding tissue barrier can no longer block its growth and reproduction. Malignant reproduction of malignant tumors refers to a disease state formed by cells losing their self-control ability, not only their own unrestricted growth, but also the erosion of the surrounding tissues, the emergence of unlimited malignant reproduction, the involvement of the surrounding vital organs, compression of peripheral blood vessels, nerves, spinal cord, and so on, which will lead to serious consequences, and even endanger the life and health. If this phenomenon is detected in the usual physical examination or examination after the symptoms of discomfort, it is necessary to consult a doctor in time to find out the cause and timely treatment.