The invention provides a non-
small cell lung cancer brain metastases prediction device which consists of five concentric circles and a pointer with an arrow, wherein the five concentric circles and the pointer are fixed through
metal rivets by sharing the same center to form a
compass shape; postoperative
pathological parameters of tumor patients, such as tumor types, differentiation degree and
lymph gland states, are respectively marked on the concentric circles. The risk of non-
small cell lung cancer brain metastases is evaluated by utilizing the state of a
tumor marker NSE. The device is reasonable in design, is displayed in an intuitive
compass form, and can be used for guiding a clinicist to estimate the prognostic risk of brain metastases of the patient, perform early
interventional treatment on a patient with high risk and select an optimal comprehensive treatment scheme for the patient; meanwhile, the
postoperative monitoring strategy can be perfected, the reexamination frequency is increased, the brain imaging check is emphasized, and the device provides help for timely discovering the brain metastases.