Brucea javanica oil emulsion is an oily liquid extracted from Brucea javanica, which has the functions of clearing away heat and toxic materials, resolving food stagnation, soothing the liver and regulating qi. In medicine, Brucea javanica oil emulsion injection can be used to treat lung cancer, brain metastasis of lung cancer and other diseases, and its main mechanism is that it can block the proliferation of tumor cells, thus prolonging the survival period of patients.