The main diagnostic method for head and neck tumors is physical examination. Through careful history taking, combined with close visual and palpation of various areas of the head and neck, experienced head and neck tumor specialists can make a preliminary diagnosis through the shape, location, related functional disorders and lymphatic drainage areas of the tumor. Then, combined with imaging examinations, such as ultrasound, CT, MRI, DSA, etc., and nuclear medicine molecular imaging means PET and other techniques, the diagnosis can be further clarified. The diagnosis can be made through a series of pathological steps or a rapid frozen pathological examination during surgery.