During the growth of tumors in the body, they need to form their own vascular network to provide nutrition, otherwise they will not be able to continue to grow. By inhibiting the formation of tumor neovascularization and cutting off its nutrient supply, which eventually leads to the death of tumor cells, this treatment method is called tumor starvation therapy. The advantages of this therapy: Firstly, it works on tumor neovascularization, and has no effect on the normal blood vessels already formed in human body, with little toxic side effects. Secondly, it does not produce drug resistance. Thirdly, the inhibition of tumor blood vessel formation also cuts off the tumor’s bloodway metastasis pathway.