The invention discloses a device for distinguishing tumor survival tissue and necrotic tissue. The device comprises a bracket base, and a bracket top located right above the base; the base is fixedly connected with the side edge of the bracket top through a vertical bracket vertical column; an illuminator which irradiates the bracket base is mounted below the bracket top; an eye lens frame in which a filter film is embedded is mounted at the side edge of the other side of the bracket top. According to the device for distinguishing tumor survival tissue and necrotic tissue, the tumor tissue can be irradiated through the illuminator, and the filter film can be used for observing to filter the interference of light at other wave bands in the environment, and as a result, an operator can quickly and accurately distinguish tumor survival tissue and necrotic tissue.